The Enchanted (Unabridged‪)‬

When Kathleen finds a mare in foal, despite the fact that she and her father can barely afford to feed her, they take her in. Tragically the mare dies, leaving an orphan that they name The Enchanted. As the young horse grows up among Ireland's lush pastures, Kathleen loses her heart to him....
But as Kathleen has always feared The Enchanted must be sold. Rory James and his father take a chance on the little horse in the hope of improving the fortune of their run-down racing yard. But luck does not run Rory's way when The Enchanted mysteriously sickens. It seems that only Kathleen can help.

And it is only under her care that The Enchanted is able to live up to his name and astonishing things start to happen to all those around him.