Hazel, 10, has recently divorced parents, a very busy mom, and a tough time at school. She gets by with the help of her one amazing friend and neighbor, Jack, who goes through a radical and unfriendly change. A tiny shard of evil mirror gets stuck in Jack and he is drawn into the forest by the powerful snow queen. Bravely, Hazel decides to go in after him even though she thinks that he has moved on from their friendship.
The realistic fiction and fantasy fit nicely side by side partly because Hazel is an insightful and funny narrator. This book would be appreciated by people who liked Coraline and When You Reach Me (and these books are mentioned in the story, along with others).