It will pass she's just trying to get attention sounds like she just likes the drama. The best thing you can do is just stop talking to her. Get her phone number blocked if you have to. Any sort of reaction from you is just going to reinforce her shitty behavior. She thinks if she pulls this I'm going to kill myself with out you shit you'll come back to her. :/ So the best idea is to ignore her/tell her to go fuck herself because you don't want to be with her. Be sure if you can to tell someone about her stupid clingy behavior so that way if she pulls something stupid to get back at you, you have witnesses that she's just a crazy bitch.