Tell your parents and hers. This isn’t okay and you should never be forced to stay in a relationship out of fear of what they’ll do to themselves. That’s emotional manipulation and SO not okay. Save screenshots of what she’s sent you and once you break up, if she says she’s going to do anything, tell your parents and call the cops and tell them you’re concerned she may commit suicide, and block her on everything. You don’t need to be involved in that and it causes a lot of emotional strain, and you just remember that you did what was best for you and her.