Demon Kept by M.J. Haag

Sometimes the past won’t stay dead.
Shelby’s suffered at the hands of her husband for too long. Rather than endure another beating, she risks everything and escapes with the creatures who brought about the downfall of the world.
The fey aren’t as horrible as her husband made them out to be. Sure they can kill with a flick of their fingers, but they’re also loyal, built like gods, and craving female affection. With the fey, Shelby might finally find a sense of safety and even a second chance at learning what real love looks like.
But it’ll take more than one fey to keep her safe from a past that isn’t yet ready to be history.