Carole Fletcher's story opens on a November morning in 1975. She began this day as a striking young teacher in a happy relationship; a horse lover and car enthusiast -- ultimately, a young woman eager for what lay ahead. But a gasoline explosion changed all that, leaving her with second- and third-degree burns over sixty-five percent of her body. At day's end, surgeons warned she had a one-in-ten chance of surviving the night and that even if she did, it would be more than likely she would never walk again -- let alone ride a horse.

Carole surprised everyone: her family, her doctors, even...