Ahh, sibling rivalry! The little boy in this story (about ten years old) has asked God to help him sell his innocently energetic, pig-tailed, little sister, Ally Grace. He tells how annoying and mean she can be, then assures others she will be nice to them. He's ready to bargain with anyone interested in buying her.
As he mentions all of the bad things Ally Grace is capable of, he begins to wonder what it would be like not having her around. After some thought, he begins to see the good she is capable of and changes his mind.
God is mentioned twice in this book. Once, in the beginning, and then at the end. At first, it appears the young boy is asking God for help. Later, it's clear he is asking God to help him do a terrible thing. The little boy doesn't turn to God for good. I think the author should have taken the opportunity to create a good relationship between God and the little boy. Maybe there should have been an adult in the picture helping the older brother understand he needs to ask God to help him cope with his sister. It's cute, comical, and even made me laugh, but I would not consider it to be a children's Christian book.