It was the story of a young girl who lives with her abusive mother. She stays mostly to herself but there are some kids at school who try to befriend her and they notice her mother abusing her. I think she built a model airplane... That's all I remember.

Maybe the book version of below?

Mommie Dearest - Wikipedia, the free encyclopedia (http://en.wikipedia.org/wiki/Mommie_Dearest)