Scream away Kyle. It sounds like maybe you are better off forgetting about her. It will take some time but remember the good stuff and let go of the bad.
There is just no reason to play mind games. It's unfair and just plain mean. Especially messing with Suicide threats.

I think the best you can do right now is just ignore her. Let her play her games, say what she wants, threaten what she wants and when she sees you aren't reacting to it she'll eventually give up.
Hugs for Kyle,
Heidu

The highest reward for a person's toil is not what they get for it, but what they become by it.
John Ruskin