Satanta's Woman by Cynthia Haseloff

Adrianne Chastain, wealthy widow and grandmother in her mid-30s, is victim of an Indian raid. Stolen by Kiowa Chief Satanta, along with her granddaughter, they accept that their hope of survival is to do as the Indians ask. What follows is a tale of the perseverance of Adrianne, the adaptability of young children, and the blooming of adult love between two unlikely humans. A very good read.