Counting by 7s by Holly Goldberg Sloan

In the tradition of WONDER and TO KILL A MOCKINGBIRD this award-winning New York Times bestseller is an intensely moving, lyrically-written novel. COUNTING BY 7S tells the story of Willow Chance, a twelve-year-old genius who is obsessed with diagnosing medical conditions and finds comfort in counting by 7s. It has never been easy for her to connect with anyone other than her adoptive parents, but that hasn't kept her from leading a quietly happy life . . . until now.