I loved the book, and also Hannah isn't a brat! She's just mad and angry at Zach for messing around with her beautiful Dalmatian, Oscar, and its funny because Hannah, she watched 101 Dalmatians, and I recently watched 101 Dalmatians, but it was the cartoon version, not the real people version.
Here's the story:
Hannah comes home to feed the birds, later, Zach comes running out, scaring the birds away, she sighs, she liked watching the birds, then, her mom comes out, too, and tell her that there's Dalmatian puppies up for sale! One day, they bring Oscar home, Zach messes around with Oscar, even one time he was trying to bring Oscar in his bed upstairs, when they weren't allowed to, and then, at some point Hannah gets Oscar, but then, her mom comes, and blames her for bringing Oscar upstairs, but it ends up being a good day on Christmas, read the book to know the whole story.
Edit: OMG! This was the best book in the whole world! It is so good and amazing. Defiantly a great Christmas present. If your child likes to read and you are looking for books to give them for Christmas then get Holly Webb's books because they are so good!