Stopping Time — Melissa Marr

Leslie walked away from the Dark Court, determined to reclaim her life and live it on her own termseven if it meant leaving behind the two faeries who love her. She knows Niall and Irial watch over her, and she would give almost anything to keep them from hurting. But she resists the pull to be with either one of them. Someone knows about Leslie's past, however, and is intent on using her to reach the fey. And he doesn't care who gets hurt.