I am glad she finally seemed to 'get it' but a little frustrated that it took most of your session for her to get there.

It makes me think countertransference. There must be something going on with her.. Otherwise, why be so defensive and stubborn? It's like she is wearing blinders and too emotionally enmeshed to be the T she used to be.

Maybe she, too, is struggling with the ending and making a poor job of it. I guess it shows that she is human and messes up BUT that is not good enough, because of its/her impact on clients. Shame that some Ts stop getting supervision or regular consultation.