Crazed, it's time to take care of yourself first. Please look into what's necessary to get a restraining order, anti-stalking order or order of protection against this person. You are the person who is being harassed and who is in danger right now.

By getting a restraining order, you will be doing what's necessary to set up the steps that can lead the court to order a mental health evaluation and/or treatment.

If the person violates the restraining order, it's imperative that you report them. They have to go to court and that's when a judge is likely to order an evaluation.

You don't seem to realize that you could end up in jail if this person can convince a judge that you're the Bad Guy and then can convince the same judge that you have continued to harass them. That's what a civil hearing is all about.

You may need to consult a lawyer to protect yourself from this person. I suggest you spend the money to do that. This person can cause you a world of hurt and if you put your efforts to trying to save them instead of saving yourself, you could be jeopardizing your own future.