The Trouble with Violet by Ann Mazer
Mabel and her younger sister Violet are complete opposites. Mabel is organized and neat while Violet is messy. When strange things begin to happen, Mabel discovers that there is magic in the family. She wonders if she will display magical talent, but it is Violet that has the magic. Much mayhem ensues from the onset of Violet’s magical abilities. A fun chapter book for beginning readers, this is the first in a series about Violet.