Maybe you try to talk to her about this issue in private. I had a boss who intimidated me and could get quite harsh when I screwed up. I actually brought it up to him in a performance review. So we were alone. I ended up crying and felt really embarrassed, but I got it out in the open. He was understanding about it and after that he didn't criticize me in front of others. He still got on me when I screwed up but he did it in private. I was grateful for that and appreciated the tips on how to improve my performance.