(((((((turquoisesea)))))))
How the pain I hear in your writing. I don't feel that was approite for your T to treat you like that and you have every right to feel the way you do. I personally would never go back. I'm not sure how long you have been seeing her so that could be an issue if you leave, but I would find another T right away. This is just my opinion.

You are not a failure. What she did is wrong in my book and she failed you. A good T should not treat you like this. And yes it will be hard to trust again, but you started to trust this T so you know you can build that trust again with someone else. It will take time but I believe you can do this. Please try and take good care of yourself.

Post here if it helps.