Gracie and her aunt Roo are best friends. Roo has the heart and mind of a child, and she's always had a knack for finding the best ways to have fun together.

But now Gracie's getting older, and her feelings about Roo are changing. She doesn?t always have time to play anymore. She worries about what her new school friend will think of strange Roo. Does growing up mean she?ll have to leave her best friend behind?

In a realistic, heartwarming story about a little girl's relationship with her beloved aunt who is mentally challenged, Glenn reminds us of the gifts we all bring to the world, and to each other. The world is comprised of all kinds of teachers.