I think something is wrong with me... (STORY)

All of a sudden, the room went pitch black.
- Dammit, must be the storm, the girl sighed and reached for her phone in her pocket.
She turned on the flash and went to the basement to inspect the fuse box. Nothing seemed out of the ordinary, everything was as it should be. At least the problem wasn’t on her side, she would probably just have to wait for a bit.
She went back to the living room and lit some candles, and eventually she made a fire in the fireplace when it started to get chilly.
Amanda had never been alone in the cabin before, but this weekend she needed to spend some time alone. All of her studying had taken its toll on her, and she needed to get away from her flatmates. The family cabin was the perfect retreat for her, and the heavy snow storm outside just made it cozier.
She jumped in the soft couch, pulled a woolen blanket over herself and reached for the remote controller until she quickly remembered the power was out.  
- I guess I’ll save Netflix for tomorrow then…
A bit disappointed, she unlocked her phone only to realize she didn't have any service.
- Oh my god, really?
Amanda sat up and looked around the room. After some gazing she noticed one of the many bookshelves scattered around the cabin. She had been here a lot, but had never actually cared enough to examine the books.
Bored as she was, she went over to the bookshelf to see if there was anything interesting to read. Her finger went slowly left to right over the books while she read the titles.
- Bram Stoker's Dracula… Treasure Island by R.L Stevenson...hmm Goldfinger by Ian Fleming? I didn’t even know they made books about the James Bond Movies, hah, she laughed and continued to inspect the books.   
Her fingers stopped when she touched a book without a title. She pulled it out, but to her surprise nothing was written on it. The book had a strange texture as it was made out of some type of red leather. She opened the first page, and started laughing.
- A beginners guide to black magic, vol 1, are you kidding me?
She flipped some pages to see what it was about, and the book contained all sorts of weird magical spells and rituals. Amanda didn’t really believe in magic, but she went back to the couch with the book. Even though it’s all bullshit it might be fun to read, she thought.
She placed the book on the table and started to undress, it was getting rather hot because of the fireplace. She stripped down to only her panties and her thin sweater.
- There we go, much better! She smiled and picked up the book.
The idea of trying out a spell grew on her, but after some skimming and flipping some pages she realized it might be a hard task. She needed a lot of ingredients, and weird ones too.
- Tears of a dolphin? Fangs of a bat? How would anyone get a hold of that?
She continued flipping pages until she got to the third chapter, and her eyes opened up.
- Erotic spells? Wow, I wonder what that’s about.
She rolled her eyes through the chapter’s content list.
- Love potions, lust enhancement, bigger bust? That’s interesting… create erogenous zone? Longer orgasm? Shit, I just have to try some of this!
Again to her disappointment, she didn’t have the right ingredients to perform any of the spells or rituals. She was about to put the book aside, but then she saw a ritual she would be able to perform.
- Summoning a succubus? What does that mean?
She started reading: Summoning a succubus can be dangerous, but if you follow my instructions you will be safe. This creature is capable of giving you pleasure out of this world! An encounter with such a being is supposed to be intense, erotic and will give you an orgasm lasting the whole night. Be warned though, for these creatures can be mischievous.
The girl continued to read the further instructions on how to perform the summoning ritual. First, she needed a place for the ritual. As cliche as it sounds, she needed to paint a pentagram on the floor, and lit it with five candles in each corner.
She then had to get a piece of flesh, soak it in milk from a mother, cover it with dirt and place it in the middle of the pentagram while sacrificing drops of blood and reading the enchantment out loud.
Luckily for her, she had a steak in the fridge, as well as milk. There were plenty of dirt in the plant pots. She found a piece of chalk and started to prepare the ritual. When the pentagram was done and lit, she prepared the ingredients and placed them in the circle. She didn’t like the idea of cutting herself, so she drained the steak for some drops of blood instead. The book was on the floor in front of her, and she started to read the lines load and carefully, while dripping some blood in the middle of the pentagram she sat in.
- Lamia mea audi Domine magna vocationem a te as te oro te misit me filia!  
After finishing the sentence she fell silent, and looked around the room. Nothing had happened, and there were no succubus to be seen.
- Hello? Anyone there? She yelled, but got no reply.
- Of Course nobody’s here… what am I even doing? Performing rituals? Jesus I’m dumb as a cow! Better clean up before the blood sets in the floor.
She got rid of the ingredients, cleaned the floor and went to the bathroom to wash her bloody, dirty hands. Standing in front of the sink, she got an eerie feeling that she was being watched. She knew she was alone, so she tried to set her mind on something else. Maybe I’ll find an actual interesting book to read instead of this nonsense, she thought. When she got back to the living room her whole body froze in shock of what she saw. It was real, it had worked. Right there in front of her stood a nude slender woman, red as blood, horns as a goat, wings as a bat, and a tail like a demon. It was a succubus, smiling and gazing at her.
- Love, is it you who have summoned me? The succubus asked.
- Umm y-yes…, Amanda stuttered, shaking of fear and excitement.
The succubus walked slowly towards the girl and stopped right in front of her. She examined Amanda while stroking her tail between the thighs of the frightened girl, but stopped as it reached her crotch. The succubus bit her lips and stared deeply into Amanda’s eyes.
- What is it you seek from me? The succubus whispered.
- I read in a book that you can grant...pleasure. Is that correct?
She paused and smiled for a second.
- Like this? She said as she poked her finger into Amanda's chest. The moment the finger touched her, it starter glowing bright and Amanda felt an immense wave of pleasure and arousal wash over her. She fell down on her knees, clutching her throbbing moisturizing pussy. Her breaths started to pick up speed, while her legs started to shake.
She moaned and screamed loudly while rolling on the floor in pleasure. She had an orgasm, the strongest orgasm she had ever had, and it didn’t seem to stop ether.
- Ahhhh, what’s going on? I’m coming! I’m coming so haaard! Ahh!
- That’s good dear, I’ll make you come for as long as I want, the succubus smiled and watched Amanda roll on the floor in ecstasy. After ten minutes of pure bliss, the succubus snapped her fingers, and in an instance Amanda’s orgasm faded away. Shocked, relieved and exhausted she stop up from the floor, almost losing balance as she did.
- Holy cow, that was intense!
- I’m glad you enjoyed it, the succubus laughed. - But now it’s time for me to have some fun!
- What do you mean? Amanda asked.
- You’ll see, she said and pointed her finger towards Amanda. Again, her finger started to glow and Amanda felt a force hit her in her gut, followed by a tingling sensation throughout her body, and then all of a sudden, she got aroused.
- Ohh, you’re gonna make me come again? Amanda smiled and touched her body slowly from top to bottom.
- That’s not the plan, the pleasure is just a side effect of the magic, the succubus said and sat down in an armchair and leaned back.
- Then what are you doing? Amanda asked confused, but as she finished her sentence she felt a throbbing sensation within her tiny boobs. She reached up and touched them.
- Ohh shit, they’re so sensitive! What did you do? 

- Nothing much, yet...but look, something is happening to your tiny orbs!
All of a sudden Amanda’s breasts started to grow and expand, stretching her skin. It was an otherworldly sensation, but it felt good. Really good in fact.
- Oh my god, are you giving me bigger boobs? Holy shit thank you so much! Amanda screamed of joy and grabbed her swelling tits. She could feel them expand in her hands, a cup size each passing second.
- I’m giving you a lot more than that, the succubus said and waited for the next part.
- What do you meaaahh!
Suddenly a new wave of pleasure hit her, and the same tingling sensation emerged in her butt. She looked behind her, and she could see her flat ass expand bigger and rounder, her hips started to widen as well. Within a few moments she had a perfect bubble butt that any girl would kill for.
- Oh my god I’m becoming so sexy! She screamed of excitement and grabbed her still expanding boobs. She looked down at them, and they had grown very big and round. She looked at the succubus.
- So..how big will they grow?
- The real question is, how much will they fill?
When the words left the succubus’s lips, Amanda’s breasts started to fill from within, causing them to grow even bigger and faster. A pressure formed within her boobs, and they started to become heavy. The girl gave them a slight shake, feeling and hearing sloshing within them. Terrified, she looked over to the succubus.    
- What are you doing to me? This is not right, they feel so full and heavy. Please, make it stop! They’re big enough already!
- Not big enough, the succubus laughed loudly.
Amanda’s tight shirt started to tear slightly, making her right nipple poke free from the pressure. Her nipple had grown bigger and longer as well, looking inhumane at this point.
- Oh my god, my nipples are freaking huge! I am a freak!
- Trust me, it ain’t god doing this...and if you think you look like a freak now, just wait a bit more.
- Wh-what do you mean? What’s gonna happen to me?
- You’ll soon find out, dear. I’ll give you a hint though, try to pinch your nipple.
Scared, confused but also aroused, Amanda reached for her nipple and gave it a jerk while pinching. As she did, she felt intense pleasure and arousal, and milk shot from her boobs.
- M-m-milk? She shuddered, you’re filling my tits with milk?
- I find it fitting, I mean you did mess up that summoning ritual, didn’t you? Milk, flesh and blood from a cow? I mean come on, I just couldn't resist the temptation.
- Resist what? What are you planning? Amanda whispered, cupping her swollen, milky jugs.
- Look at your hands.
Amanda inspected them, but she didn’t see anything out of the ordinary.
- Look closer, your nails.
She was right, Amanda gave them a closer look and she could see her nails had turned black and hard. As she watched, her nails grew longer, and her fingers felt stiff. Within moments her hands started to move on their own, slowly fusing together.
- My hands...what’s...what are you doing to them?
- Cows don’t have hands now, do they?
- Cows? What do you mea…
She stared back at her hands and they continued to change, leaving her with only two thick, freakish fingers on each hand.
- You’re turning me into a cow?
- There we go, you finally got it!
- No no please, I don’t want to be a cow. I’ll do anything, please I beg you, change me back, she cried.
- Stop crying, we haven’t even come to the best part! The demon sulked and jerked Amanda's nipple hard.
- Ahhh, Amanda moaned and clutched her crotch.
- You see, it feels good doesn't it? Just let it happen, lose control over yourself.
Amanda started to jerk both of her own nipples as she rolled on the floor in pleasure and ecstasy, creating a mess with all of the milk shooting out of her. White and brown fur started to grow on different parts of her body, while her ears started to lengthen. When she realized, she got back to her senses and reached up and felt her fluffy ears.
- Oh no, my ears! My ears!
She then felt something strange on the side of her hair. She inspected the alien objects poking through her hair.
- Horns? No no no no, I beg you, please make it stop. Change me back!
Her breasts had shrunk while milking herself, but they soon swelled back to their enormous size and continued to grow, tearing her shirt even more.
But then she felt a tingling sensation under her boobs. She grabbed what seemed to be two small nipples, but before she could determine what is was they swelled larger, growing and expanding in her hands. She could feel it, and she knew what it was. Boobs, she was growing an extra pair of boobs!  
- No, wait, you’re giving me four boobs?
- Cows have udders now, don’t they? The succubus smiled and enjoyed the view of the changing, terrified girl.
Her new breasts grew quickly, matching her ridiculous large boobs. Her butt and hips continued to expand, but something new was happening. A small bump had grown above her butt, and it continued to lengthen. Not before long she had a tail.
- My dead girl, it’s been a pleasure but I must now leave, the succubus said and rose from her chair. 

- No wait, don’t leave me like this. I wanna be human, not a cow!
- Don’t worry, you’ll stay like this, half human, half a cow. A cute little cowgirl!
- Noo, I’m a freak! Please, you have to do something!
- Alright little cow, I’ll give you one more treat. When I snap my fingers, your breasts will continuously start to fill milk and it will erupt from you, hands free. And it will feel...good! And it won’t...ever...stop, the succubus smiled.
- No wait, what do you mea…
“SNAP”
- Oh, ohhh, ahhh...Amanda started to moan, falling on her knees.
Her four boobs swelled even larger, feeling so full. Once they reached their limit, milk flushed out of them. Amanda rolled on the floor, screaming of pleasure and bliss, clutching her pussy, grabbing her tits. She was shaking, it was too much. She orgasmed hard, and it didn’t seem to stop.
- Hope you enjoy your new life as a horny, coming cowgirl.
- Ahhhh, ohhhh, noooo, waiiiit dont leaaaavee, aahhh, Amanda moaned, but when she looked over, the succubus had disappeared.
She had to live like this for the rest of her life. Life as a cowgirl, orgasming forever. Was this a curse, or a blessing?