
You did GREAT!
Does the result of having a night without fighting feel better to you?
As for your question: The best option is not being around somebody who is dysregulated.
You talk about wanting to validate her. This is a good skill and a good desire. This is the wrong time to use it. If she is dysregulated, she's going to be the least responsive to validation ever. Even the Mother Theresa or the Dalai Lama couldn't validate her out of it!
My suggestion: Make it about YOU, not about HER.
You sound afraid of seeing her this weekend.
Try this on for size:
Text her "I don't feel safe seeing you tomorrow. Please don't visit me at my home on Saturday."
If I recall correctly, she did move out, so this is YOUR place, not a shared home/apartment. She is welcome there on your invitation. She has no RIGHT to be there. And absolutely no right to subject you to a dysregulated rage. Anywhere.
If she gets off the dysregulation and brings up the dogs... .if they are joint dogs, not yours, and you feel safe doing so, offer her a chance to take the dogs to spend some time with them.
That's secondary to protecting yourself from verbal abuse!