The Astonishing Maybe  Shaunta Grimes

Gideon hates the idea of moving to Nevada from the East Coast. It's so empty and hot in his new neighbourhood. Only one person his age lives nearby: the girl next door, Roona.

Gideon notices right away that Roona is . . . . different. She wears roller skates and a blanket as a cape when she needs to feel strong. What he doesn't bargain for, however, is how far outside his comfort zone Roona will take him as she enlists his help in finding her long-gone father. For a kid who's not allowed to ride his bike more than a few blocks from home, this will be the adventure of a lifetime.

Friendship, heartbreak, and defining what family means are rarely as sensitively, beautifully portrayed in middle-grade fiction. Shaunta Grimes is an extraordinary new talent.