The Littlest Bigfoot - Jennifer Weiner - Bog

"The story of twelve-year-old Alice, a misfit who is ignored by her own family and shipped off to boarding school. She'd love a friend, and one day she rescues mysterious Millie Maximus from drowning in a lake. Millie, it turns out, is a Bigfoot, part of a clan that lives deep in the woods. Alice swears to protect Millie and her tribe, and the two girls try to find a place where they both fit in"--