I wouldn't take it personally, Scarlet, though I do understand why it would be difficult not to. Something that my current T and I discussed in our intake was how important it is to find a therapist whose interests and training align with the client's issues. He was interviewing me as much as I was interviewing him.

It seems like a lot of therapists don't take this stance and will take in anyone who has the means to pay for the hour. So it sounds to me like your ex therapist just recognized that she's not the right therapist for people with BPD.