Expelled to a New School of Wolves?

When a young girl, Marina, gets expelled, yet again, to a new school. And ruins her sister's life again. She finds herself living among creatures that are only found in fairy tales and children's books. Also her best friends takes her evil mate's side and rejects her. Marina has to try and find a friend and her one of a kind mate without knowing one thing about wolves and that she is one of them too. She also has to regain her sister's trust and love for ruining her life more than once.