Wildfire

Wildfire is a western adventure fiction novel written by Zane Grey, an American author and dentist best known for his popular adventure novels and stories associated with the Western genre in literature and the arts.

Excerpts:

She longed for something to happen. It might be terrible, so long as it was wonderful. This day, when Lucy had stolen away on a forbidden horse, she was eighteen years old. The thought of her mother, who had died long ago on their way into this wilderness, was the one drop of sadness in her joy. Lucy loved everybody at Bostil's Ford and everybody loved her. She loved all the horses except her father's favorite racer, that perverse devil of a horse, the great Sage King.