I'm not sure what to do. I think I married a psychopath.
Oh no have they done something? Do you think they are dangerous?
Yes, I often fear for my life.
This is a scary situation that you need to get out of quickly. You need to get away from your dangerous spouse and end this marriage.
What if I don't want to get out?
It's understandable if you don't want to leave her. You should at least make sure that she gets treatment for her problem. She may be a completely different person once she's treated.