I need help breaking up.

The girl I'm with is showing her crazy side and its too crazy for me to handle, she cries and says she's gonna end herself if i leave, yesterday i was trying to break up she took 20 pills of something idk what but she still seems fine, idk how to get away she's is in 50k debt too and doesn't think reasonably, i just want to get out but I'm scared she may actually do it cause her life at the moment isn't a easy one, everyone uses her even her parents, she pays all the bills, while her mom wastes money drinking and the friends she had stole her social security and added a 10k dept to her, i can't say stole cause she gave them her social to take the loan who does that, there's just way too many red flags but I'm her only support right now if i leave I know she'll do it.