Sold to the Vampire Prince

Elizabeth's life was hard enough as it was being placed in foster care when she was barely a year old, but when she was 6 a happy and loving couple adopted her. She thought life was great until Clair came along, her parents stopped caring about her because they finally had a child of their own, they forgot to feed her the game Clair all of her things and gave her Elizabeth's room, she moved into the basement and then on her sixteenth birthday she found out her parents sold her to the Vanders. Now she's leaving her home, moving in with complete strangers, and marrying one of their sons. But there's more to this family then there seems, something that's not normal.