The Obelisk Gate

"Essun--once Damaya, once Syenite, now avenger--has found shelter, but not her daughter. Instead there is Alabaster Tenring, destroyer of the world, with a request. But if Essun does what he asks, it would seal the fate of the Stillness forever. Far away, her daughter Nassun is growing in power--and her choices will break the world"--