Trying to make is Right

[C-Bart]

GW,
Time to set some boundaries. Define the boundary and establish the consequences. When your W starts to verbally abuse you simple say I understand you are upset and I'm willing to talk with you but not until we can be respectful to each other. Then walk away. Be ready for her to escalate with additional verbal bashings but walk away.

Also, stop beating yourself up. What is past is past. Remember your R is a co-owned co-created thing.