Missouri is a "no fault" divorce state (I think the majority of US states are, now). The only time the "fault" (e.g. adultery, abuse) comes out in these states is when you have a dispute regarding property or child custody/visitation issues.
Aside from GEL and her lead pipe, I think your best "weapon" right now is gaining insight and information on the process of separation/divorce, and on the risks associated with having a person in the process who is violent/abusive.
I think I speak for a lot of us here when I say, I'm a bit worried about you.
