Granite, T seems to be concerned about your health and protective of you.

The mother is not a good person and contact with the mother sounds harmful for you. T sounds worried.

I know you feel you're awful and worthless, but that is the mother's evil teachings, not your true worth.

I agree with velcro,
You confuse her being upset FOR YOU, believing it is her being upset AT you.

The mother has indoctrinated you, Granite. The mother took out all her upset on innocent you. Hence it makes sense you believe T is upset at you. But T is not upset with you, dear Granite. She's upset at the wounds the mother has left on you which is the mother's fault and not yours.