Diana Cain Bluthenthal is the author and illustrator of Matilda the Moocher and I'm Not Invited?, and the illustrator of a dozen other books for children. She lives with her husband. two young sons, and pets (including two worms) in North Carolina. Diana Cain Bluthenthal is the author and illustrator of Matilda the Moocher and I'm Not Invited?, and the illustrator of a dozen other books for children. She lives with her husband. two young sons, and pets (including two worms) in North Carolina.