Good job. Less words is always better. Don't be rude or bitter sounding. Keep it business.
If she gets to barking at you then just exit the room, house, or situation.
What are you 180s and how are you progressing on them?
My 180s are detachment, email only communication about the kids / finances, no longer initiating R talk. I need to learn to shut up and walk away and not prolong a conversation she initiates.