Oh you're adorable, he think he has a choice much less chance? Lets put this way, an very much experienced older diplomated majored vampiress wants something, she gets it. It's simple. It's not like you'll be sleeping in the cave.
clean sheets everyday, a warm bed, a room of your own, three meals a day and all the books you can read. Sounds quite balanced.
She's openly Misandric. She would kill you. She does not like men at all. Well, maybe boys, but that is something I do no wish to know why there were boys in her castle to being with.
She's neither. There's no sexual orientation for her yet. It's only implied she was a sleeping and woke up with the sound of three boys and three walls while her generals prepped. Considering her guard is all female, and that means a population of girls must be given to her by the villages, this implies that children must exist within the castle.