My T kind of had a reaction like that once and I felt like she was truly frustrated with what my mom said to me. In that instance, it helped me because I was frustrated about it to but I didn't know if that frustration was completely warranted. I felt like my T was really looking out for me and cared realized how unhelpful my mom was when she said that.

My T generally doesn't show her opinions or feelings about stuff like that so I felt like her reaction was very honest and sincere.