Book request: Okay, so I read this book in fourth grade and that being like five years ago I can't remember the title. My sister is now in 4th grade and I want her to read it, but that's a little hard if I don't know what book it is. Mainly, there is this girl who gets mad at her brother for something (I can't remember what.) and she makes a wish that somehow turns him into a pig. She has to figure out how to save him and make him human again. I remember something in the beginning of the book about chocolate cake, and later when the boy is a pig his sister feels his ears and makes a remark about how soft they are and how people make purses out of sow's ears. Can you help me?

Matching book description: Eleven-year-old Louise Tolliver lives with her mother and her brother, Willie, in Tollivers' Hollow. Like any brother, Willie gives Louise a hard time, but the trouble really starts when Louise calls him a pig -- and he becomes one.  And that's not all. Louise's father has been missing for seven years, and the locals are starting to wonder about Tollivers' Hollow. It's now Eleven-year-old Louise Tolliver lives with her mother and her brother, Willie, in Tollivers' Hollow. Like any brother, Willie gives Louise a hard time, but the trouble really starts when Louise calls him a pig -- and he becomes one.  And that's not all. Louise's father has been missing for seven years, and the locals are starting to wonder about Tollivers' Hollow. It's now up to Louise to use her wishes for good and make right all that's gone wrong. She uses her head, her heart, and a little bit of magic to bring her family back home. ...more