I understand you´re upset, I´d been too. If I personally heard this from a T I would interpret it like "I think it´s rather unnessesary for you to be here and I don´t know why you´re here". A comment like this could probably ruin my trust in a T but I´m quite a sensitive person.

I would probably also feel that this T is unsure about her work or that she´s tired of working with me, perhaps she tries to provoke you to answer to what you think you´re getting from seeing her. Unproffessional I think.

I´d try to bring this up and just ask her to clarify, I wouldn´t show how upset I was but just ask her in a conversational tone.