Getting Rid of Katherine — Betty Ren Wright

Emily's new grandmother has got to go!

Emily can't wait for her grandfather to return home so they can spend the summer together. He's never too busy to listen to her, and he always understands when she has a problem. But when Grandpa shows up with his new wife, Katherine, Emily's summer is unexpectedly ruined. Emily decides that she must get rid of Katherine -- the sooner, the better!