Maybe she is one of those Ts that purposefully don't take hints so you gotta bring up the topic and talk about it. Sneaky but I can see why they do it. Just say to her "look, I need to know what PD you have diagnosed me as" and if she either tries to brush you off or change the topic or won't TELL you then you say "Well unfortunately that is not acceptable to me. Will you please give me an appropriate referral, as this is my last session, thank you".

Sometimes you have to just step up and tell it like it is, blunt force, to the face (verbally, I dont mean punch her!! haha). At least if she gives you a referral you will have some other T to try after you get rid of her. They usually give a referral if you insist because to not do so is considered "unprofessional" and they dont want to be known as that!