ตอน 409: Salvete Mortem- Part 3

The vampiress slightly turned her head up to look at the roof of the castle. "My mother was one of the Duke's daughter, who was from Dunkril Grounds. He didn't take her to be his wife as he was already married, but it didn't stop him from keeping my mother as his mistress. Because of this, I got a position in the court."

That meant that it was because Lady Constance had no actual background, which was why the King or his family had not bothered to give the woman a house or support, and had instead thrown her out of the castle after using her.