Reconstructing Charlie by Charmaine Gordon

Charlie Costigan has a secret. Home life gone from bad to the worst when she protects her mother from another vicious attack by her drunken father. 

Midnight. Clothes thrown into an old suitcase, she races for the bus with a letter to an unknown aunt and uncle. "This is my daughter. Embrace her as if she were your own."

Determined, Charlie begins again. Alone with her secret.