I'm in over my head here, but want to tell what I read in I HATE YOU, DON'T LEAVE ME, about BPD: that author didn't provide much hope for therapy to help the sufferer, but did say that people sometimes "mature out" of BPD.

In other words, there may not be much that a therapist can do, but who can say change won't happen, just because of the person's own makeup and experiences, and I suppose, "maturing?"

I agree with Rapunzel in distrust of the professor who would say what she did. Who can say what lots of awareness and plain hard work won't accomplish?
Too bad you don't have a more supportive therapist.