Amelia's Notebook by Marissa Moss

Amelia, much to her dismay has to move. New city, new house, new school. Her Mom gives her a notebook to track her feelings and let off steam. And oh does she let off steam - sometimes with words, sometimes with illustrations. Her sister, Cleo, is often the victim of Amelia's illustrations since Cleo is having little trouble adjusting to their new surroundings. This is as much a book about moving to a new place as it is realizing sometimes change is okay.