Calli Be Gold by Michelle Weber Hurwitz

Calli's family expects her to be someone, and not an ordinary person. Her sister is a skater, and her brother is a basketball player. One day at school, she has to buddy with someone named Noah. When the day comes that they and their buddies make a booth at the fair, Noah vanishes. Calli finds him far away from teh school, and convinces him to come back. She also convinces her family that they could be whatever they wanted. -Katherine