YA book
I am trying to remember this young adult book I read about 9 years ago. The main character was a girl who nobody liked because basically she was a bitch and then she had some sort of an accident that pretty much changed her attitude. But know one believed she had actually changed. And there was something about her saving a child from getting hit by a semi or a truck and her not telling people about it right away. I think that was when people realized she had changed.