My five year old enjoyed the book. As one of five kids, I could relate to the sibling picking; but as the baby behind two big ones, she didn't quite "get" it. She said Anabel shouldn't have yelled, and wanted to know why George was picking at her cat. George sounds a lot like one of my brothers, and I recommend it for the 4-6 year old age group.
To purchase from Amazon: Stop it!