David’s younger sister Ivy, born with multiple disabilities, needs constant attention. She may be eleven years old, but in many ways she’s still a baby. She embarrasses him in public. She takes all of their parents’ focus, to the point where David wonders if they see him as anything more than a helper for Ivy. But despite it all, he loves her. The summer days are following their usual pattern of taking care of his sister, doing chores, and trips to the cottage. The one except