Book Recommendation

Worked 12 straight hours on a new book yesterday then thought about it all night after waaaaaay too much caffeine. As a reward I'm purchasing this book (makes sense, doesn't it?), which is quite possibly the most marvelous early reader/chapter book I've read in years. Whether you're a 5-8 year old girl who is in love with horses, or you're a children's book writer who has wanted-a-horse-her-whole-life-but-has-had-to-settle-for-other-pets-which-are-wonderful-too-but-not-the-same, you will l...