When 12-year-old Catherine is embarrassed by her autistic younger brother’s behavior, her mother reassures her that “real friends understand.” But Catherine is not convinced, and she is desperate to make a friend of the new girl next door. She doesn’t like it when others laugh at David or ignore him; she writes down the rules so he will know what to do. Catherine is also uncomfortable about her growing friendship with 14-year-old Jason, a paraplegic. Jason uses a book of word cards to communicate, and Catherine enjoys making him new cards with more expressive words. Still, when he suggests that they go to a community-center dance, she refuses at first. Only when Jason sees through her excuse does she realize that her embarrassment is for herself. Catherine is an appealing and believable character, acutely self-conscious and torn between her love for her brother and her resentment of his special needs. Middle-grade readers will recognize her longing for acceptance and be intrigued by this exploration of dealing with differences. (Fiction. 9-12)