Daughter of Ashes - Legends of Tirum, #1

Telyn Gwndal has always felt like an outcast. The illegitmate child of a forbidden union that crossed the lines of feud, she bears the scorn of both of her parents' houses. Her conception and birth at the Fire Mountain, Raiador, is something Telyn views as a curse, and she would gladly forsake the strange bond she holds with her birthplace. But when a traitor brings her face-to-face with her destiny, deep within Raiador's core, her biggest ally is a man with secrets bigger than either of them.