Here they are, a sneak preview at nurse Cora, you will be able to see more of her in Episode 5 (3 days away). While she will not be a "main character", meaning that you cannot develop a relationship with her, you can still enjoy her company as the story will push her inside the Manor.
She is a shy and nice girl with a kinky freak inside of her waiting to surface, given the right circumstances that is. As usual, your interaction with her will be sort of optional, meaning that she will not be pushed on you unless certain things have prepared the path.
****SPOILER****
By agreeing to drink some of Mistress Clara's blood you will be pushed into sexual relations with her. The way this works is that while it opens up new and interesting situations, sexual ones, it also takes away your choice in the matter, so you might end up doing something that you normally would not do... No risk no reward. Everything else stays the same, with choices and options. This is only a part of the story and you can decide to refuse the blood.