Hi, Can someone please help me find this siblings' book?
She lives with her stepmum (her mum's friend). she goes to a new school where her brothers also go and she meets a boy there who works under the mafia that her brother owns, his father is trying to find their sister and her friend tells her that his father is trying to find their sister. somehow, she figures it out that she is their sister but decides to keep it a secret because she was also trying to find her family, and I think her stepmum knows who her family is. Later, she gets involved with a fight with her 'Xander' brother, and her older brother is called to school, where she lets it slip that she knows who their sister is so basically her brother kidnaps her and keeps her until she tells him the truth. (I'm sorry for the long description, but I have desperately tried to find this book, and I am sorry for posting this here without permission)