From the Book Jacket:
Dear Diary, .
I get a sick feeling whenever I look at a person riding a horse and acting so smug and happy at being up there. I just want to crawl under a rock and cry.
There's nothing Molly wants more than a horse of her very own. She doesn't care if it's a filly or a colt. Just as long as it's young and strong and can gallop faster than mean Freddy Westover's old mare Delia.
Then Molly's dream comes true: She's getting her own horse! But the mare she gets isn't quite what Molly wanted. Lady Sue's so old and worn out, she's probably slower than Delia!
But Lady Sue has a surprise for Molly that's better than anything-a baby mulel Molly plans to turn Brown Sunshine into a hard worker and a good friend. But Brown Sunshine just may have a few surprises in store for her.
"A different sort of horse story, this engaging novel will be appreciated by Henry's many fans."-Booklist