Blind Beauty by K.M. Peyton

Tessa has major attitude and an impossible dream—not a great combination for success. But she believes that fate has delivered the ungainly horse Buffoon to her, and Tessa is determined never to be separated from him. What's more, she intends to one day become a jockey and ride Buffoon in the Grand National. But how can a girl with a violent temper and a “can't do” philosophy gain the physical strength, courage, and money needed to become a jockey—especially when her stepfather would like nothing better than to see her fail? Determination and grit may not be enough—but Tessa's not going to let go without giving it her all.