My ex uBPDexgf was extremely phisically and emotionally abusive.
Its good to recognize what is and isn't abusive. Mine was a more helpless, acting-in individual with BPD so it was hard to pin down what was and wasn't emotionally and mentally abusive, especially when a lot of the same behavior was glossed over in my childhood.
Thankfully, it seems your ex made it more clear how ill she is.
I have done a lot of work on myself and I have been in therapy for 4 months. I have gotten to the root of why I got drawn into my ex, why I stayed and put up with the abuse. I am doing the work to make sure I don't repeat these behaviors in the future. I think those are all positive things.
They are, but give your heart time to catch up with your head. The time will come when you automatically apply your new-found knowledge; its stored in your mental vault and will be applied when needed so overthinking it will lead you to suspect average-healthy women of being borderlines.
I hace accepted that my ex has some form of mental illness and that an actual diagnosis does not matter to me, because it's just a basket of maladaptive traits that are harmful and toxic. I have also accepted that nothing positive will happenen by being in contact with her. I think those are positive things too.
I think I still have a great deal of anger and resentment towards her, and I think it causes me to enter into a weird cycle where my anger towards leads to greater empathy for her which leads to more anger and resentment. I recently saw her walking the new dog that she got recently and I had a disturbing thought. I really don't want her to be happy and I don't want good things to happen to her. I want her to meet a guy who is going to abuse her as bad or worse than she abused me. I want her to make good on her constant threats of self harm and end it. I know these are not positive or good thoughts, and I am disappointed at myself for having them. I know that she is ill, but it doesn't excuse what she did to me and the harm she caused.
The anger stage is normal and is a sign you're progressing through the stages of recovery from this kind of "proxy disorder" if you will. I personally went through a stage of wanting bad things to happen to my ex and the replacement but you eventually realize that these people are never happy which is why they seek external validation. Its pretty useless to think about now, but it'll make more sense later. "Karma" is instant in the sense that how they react creates their life situation. This is due to repeat until they finally let go of their victim identity and get into therapy, which may or may not happen sooner or later.
This is the stage where you may start looking for a new woman to take your mind off the problems you're facing, but please avoid this trap. Because it is a trap.