Sounds like your t was centering herself around your excitement.
I've asked my t about her body language or her tone of voice before, but it mostly resolves around me reading anger and frustration into everything and I need a "reality check". A few times though, t has left me confused because she tries to get me to accept that I'm reading correctly but that the frustration or anger is the other person's problem and might not have anything (or much) to do with me...