Hi Trog,
Glad to hear things were quiet for you. Sorry that you were met with sarcasm, it sounds like she has not moved on.
One of the issues with BPD is a problem grieving hurts, they continue to feel like third-degree burns. The emotions are continually being re-triggered in new relationships. Same wound, new trigger.
She probably will struggle to find relief from the pain she feels and the pain she inflicts. It's part of BPD, unfortunately.
It feels personal, and in many ways, it is not.
Good luck with the rest of the process. I hope it goes smoothly for you

LnL