I agree with TTGB that you should tell her. It might be hard but it you just ignore it, it won't go away.

I was angry at my T a few sessions ago. I was so angry that when I came in I refused to sit and instead started pacing back and forth (like some crazy person lol). I told my T I was angry at her. After some prompting I was able to tell her why. It wasn't easy at first. She actually seemed happy that I was angry with her, well I think it was more that I actually told her how I felt. T was apologetic that her actions led to this type of reaction. We were able to have a discussion and come to a resolution on the issue. She also told me that if something made me angry again to either call or email her immediately as she didn't want me building up anger over the week.