I know about mirroring, believe me. So she does the typical BPD thing, she diffuses the situation and tense feelings by mirroring a conversation I would have brought up. Think politics or the economy. The diversion tactic...works most of the time for her but I know what she's doing.
Anyway to get on me about my bf and the apartment she quickly switches gear. She went from mirroring me (or maybe my deceased father??) to wearing the mask of my uASPD/BPD brother in an instant. It was the most frightening thing I have ever seen because it reminded me she has no personality of her own. She drew up straight in her chair, used his tone of voice, his slang, and even his facial expressions!!! Momster used "his persona" to confront me about the apartment. She even managed to even laugh like him, she looked like a crazed marionette to me! I used her own diversion tactics back on her and used the logic that the law is on my side. Not that it matters....what I am sooo upset about is how she turned into another person RIGHT BEFORE MY EYES.
Have you witnessed this? Does this mean the pwBPD is becoming dysregulated? Do I have more behaviors to look forward to? If you have witnessed this, do you ever wonder if pwBPD actually has a soul of their own or do they just borrow a mask of everyone else around them their whole lives??