Yikes, playing the same game back at them? Why are we playing games in the first place?
Just be honest with how you feel, and you can do this in a tactful way. Not saying "you do this, you do that" more so saying "I feel alot of pressure, I feel sufficated" for example She's a nutcase for threatening suicide and everything but how long can you play this game just to keep her happy? She's so selfish and the act of suicide is the definition of selfish. You can't make her wake up and smell the coffee but this kind of behavior from the both of you is not what long lasting relationships are made of. You are wasting your time if you think what you are doing is going to get you anywhere.
Waking up next to a beautiful girl,
Step outside and say hello to my beautiful world.