Paranormal romance woman is kidnapped by a demon escapes with an amulet....Help please oh please

What I do remember the main character is a woman and she get's forcibly taken to the demon real or something like that. The demon's first special lady friend died and he brought her there to take her place. Human's can't survive for long in the demon realm and she escapes I think there was an amulet of some sort involved. She wasn't feeling the demon relationship he took off on her and I remember her complaining about waking up alone and realizing he didn't really care about her. It was set in modern times, was for adults she meets a love interest (not the demon) I think the love interest was a vampire...I can't remember anything else please help.