Becoming Jesse Tate (2009)

Jesse Tate is a vivacious thirteen year-old girl trying to cope with life while keeping a family secret. She struggles to be part of the "in crowd" and the weird new feeling that boys really aren't that dumb. It's a lot for anyone to handle. Now, the secret threatens her friendships and family. She must search for the things that are really important to her. Along the way, she discovers the meaning of forgiveness and ends up helping those around her without even knowing it.