She got mad at you for inviting her to dinner because it made her feel guilty. the thought of sitting down to eat with her family after all the chaotic madness she KNOWS she has committed makes her have to look in the mirror at the monster shes been.
Call it sober moment of clarity perhaps.

You're doing awesome with an impossible situation MTB.
I have actually been somewhat suspicious of drug use myself, but with NC and TRO i cannot confirm this. I know coke is prevalent in WW's industry and it would explain the 45 min bathroom trips everyday after work when we were still living together.
I actually hope my WW's behavior could be explained by something as simple as drug use.

M: 35, EX-W: 3, S:4
All Divorce Proceedings Complete - Oct 18
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2nd EX - Was Engaged - Diagnosed BPD
2 Major breakups.
2 Rebounds