The Birthgrave - Tanith Lee m4b

A mysterious woman awakens in the heart of a dormant volcano and comes forth into a brutal ancient world transformed by genocidal pestilence, fierce beauty, and cultural devastation. She has no memory of herself, and she could be anyone mortal woman, demoness lover, last living heir to a long-gone race, or a goddess of destruction. Compelled by the terrifying Karrakaz to search for the mysterious jade that is the answer to her secret self, she embarks on a journey of timeless wonder. (Birthgrave Trilogy, 1)