Naamah Trilogy #2: Naamah’s Curse by Jacqueline Carey

Far from the land of her birth, Moirin sets out across Tatar territory to find Bao, the proud and virile Ch’in fighter who holds the missing half of her diadh-anam, the divine soul-spark of her mother’s people. After a long ordeal, she not only succeeds, but surrenders to a passion the likes of which she’s never known. But the lovers’ happiness is short lived, for Bao is entangled in a complication that soon leads to their betrayal.