Hi slcguy,
Welcome and hello

Admitting that you are the target of abuse is hard to do, and frankly, also takes a lot of courage. It is the first step toward honoring yourself.
Most likely, if she is BPD, she is driven by a rescue fantasy wherein others must take care of her, meanwhile she resents when others perceive her as helpless. Confusing, to say the least!
She likely projects conflict onto you so that she doesn't have to feel the conflict internally, because to do so would produce catastrophic levels of pain she is not psychologically equipped to handle. So much so that the mere thought of
you seeing a therapist is a threat to
her.
Do you plan to go back and see this therapist? Maybe that's one of the ways you can begin to honor your needs. We can help you with communication skills and boundary setting if that's helpful, and give you a hint of what to expect as you begin to change the dynamic ever so slightly.
Glad you found us! And glad you are here.
LnL