Lucinda, Dangerously (Demon Princess Series #2)

Soon after returning to the world of the living with her two bondmates, demon princess Lucinda is kidnapped and imprisoned by her enemy, Derek. He brings her back to a hidden outland in Hell, a bleak and desolate landscape riddled with disfigured rejects. At first enraged by Lucinda's new abilities, Derek soon realizes that he may have just stumbled upon a way to regain his power, and Lucinda's new life is the sacrifice.