I find it helpful to remind myself that it is not my therapist's job to actually care about me, but rather help guide me into a healthier direction in my life...it is still ultimately up to me to make the said changes and her advice is in my best interest (as in what's safest for me). BPD can make us have love/hate feelings towards people, especially those closest to us. We over read into their reactions and take it personally, when no personal attack was intended. Sometimes I feel myself being mad at my therapist for not returning my calls fast enough or not seeming interested enough when I talk, but remind myself that this is simply her job and I must blindly trust that her advice is the best I can get...especially considering that following my own advice has not been the best for me many times. I know she doesn't care about me, I'm one in a million patients, but it is her job to keep me safe and to help steer me towards a path of happiness. I force myself to have faith in her at my worst of times because of those small glimpses where I see the potential...the bad part of my brain doesn't want me to see.

IDK if this helps you or not but I find it helpful to disect my relationships with people so that I can develop healthier boundaries.

Maybe at your next appt. with your therapist you should bring up your feelings towards them and what it is exactly that they do to make you feel as if they don't care about you. Your therapist may be surprisingly helpful in helping you cope with this feeling of abandonment.