I'm sorry you're in this situation with your T. I don't think T's are supposed to tell clients what they aren't ready to hear, but my former T was blunt with me and I didn't appreciate it.

I think what you could do, if you're sure you aren't whatever T told you, is to give concrete examples, like "I acted this way and said this, in this situation, so you can see I'm not like what you told me".

Or, if you're not sure if what she said is true or not, you could say "it hurt me when you said what you did. Maybe it's true but I'm not ready to hear it". You can ask her what she's basing her opinion on.

I wish I had more suggestions. Is it possible there is SOME truth in what T told you? Maybe it's not all true, maybe most is wrong, but some is the truth. It's hard to see the truth about us. If it's not true, then show her that it isn't with examples, like I said above.

I hope you can work this out because I know you like your T!