Her work included the Kids of the Polk Street School books, the Friends and Amigos books, and the Polka Dot Private Eye books. Several of her novels for older readers have been chosen as ALA-ALSC Notable Children’s Books and ALA-YALSA Best Books for Young Adults. They include The Gift of the Pirate Queen; All the Way Home; Water Street; Nory Ryan’s Song, a Society of Children’s Book Writers and Illustrators Golden Kite Honor Book for Fiction; and the Newbery Honor Books Lily’s Crossing and Pictures of Hollis Woods. Lily’s Crossing was also chosen as a Boston Globe–Horn Book Honor Book. Her most recent books include the Zigzag Kids and Mysteries on Zoo Lane series, Genevieve’s War, Island War and A Slip of a Girl.