I am sorry that you have been experiencing so much anger in your relationship. BPD is a mental illness that they are often unable to control. It is not done out of a desire to hurt you but out of an inability for their brain to handle situations well. We have an article on
How the BPD Brain Works that might help you understand what her mind is like.
I am deeply concerned about the level of anger that you are experiencing. Have you become physically violent with her in the past? When you find your emotions getting out of control how do you calm yourself? I would highly suggest that you find a T to help you work through your heightened emotions. Would you be willing to do that?
You say you feel like your wife is an evil psychopath. What is she doing that is causing you to believe this?