How the hell do I save Christine?

I managed to keep Dog-God and Dean alive easily, but every time I go to talk to Christine there are no options to keep her alive, I didn't lock her in the elevator I haven't done anything to provoke her and she attacks me?

Help is appreciated!

I had this problem. When she attacks, run away to the part of the floor near the lift. Have a sleep in one of the beds for an hour or two. Go find her again (she may have moved). She should now be friendly to you.