Book excerpt: Dani was born with her heart on the wrong side of her body. In her fifteen years of life, she's had more doctor's appointments, X-rays, and tests, and eaten more green hospital Jell-O than she cares to think about. Fourteen-year-old Amanda is a competitive gymnast, her body a small package of sleek muscles, in perfect health. The two girls don't know each other, don't go to the same school, don't have any friends in common. But their lives are about to collide. Acclaimed author Jill Wolfson tackles this fascinating story with her trademark honesty and wit.