Replace her pills with flinstone gummies

You have my sympathy. It's up to you if you want to stick things out. If she kills herself, it's not your fault as long as you inform her family or friends of this issue.

Under pressure...

That's one unhealthy relationship. You should confront her and let her know that you respect her feelings.

I hate the ones who say "well if you can't have me no one can." so unfair to the other guys.

Get the heck out of there. Emotional blackmail like that is not healthy at all

Well if it comes down to the point where you are unhappy with her, make her break up with you. Start doing habits you know she doesn't like. Spare her the pain?

OP, it's an awful situation, but you should not feel pressured into staying with her because of this emotional blackmail. In fact, this is a HUGE warning sign. I think that you need to talk to somebody, someone in her family maybe, or one of her friends so that you aren't carrying this burden alone. And if you are genuinely concerned that she may actually make an attempt on her life, you should be able to call an ambulance and say that you think that she will commit suicide. I know that you can do that here in Australia, not sure about where you are, but I would imagine it's the same. My mum had a friend whose boyfriend threatened to kill themselves if she left him. So she left him. He did not try to kill himself, but even if he had, it wouldn't have been her fault. So sorry you have to go through this OP. Take care.

you need to tell someone. her siblings, parents, someone.

I hope shes lying, people do some crazy stuff to stay in relationships