Newbery Medal-winning author Patricia MacLachlan has written a magical and funny tale about the joy found in using words, sharing stories, and loving a wondrous dog: Rex.Grace’s aunt is a writer. She works with words every day and teaches Grace interesting words like “melancholy” and “delirious.”But Lily is often “flummoxed” by her writing. Her stories don’t go anywhere, her desk is a mess, and her writer’s group can’t help.So Lily posts an ad for an assistant: A writer of bo