回复：你是用的升调吗？还有你当时什么表情

Thanks a lot. We need to focus on the other topic. This is not about "I yelling at her". I am not yelling at her,PERIOD.

Just normal expression. Normally if she does not know the answer, she would say" do not yell at me". This happens a million time. I need the suggestion to deal with this kind of person. She would say it anyway no matter what the expression, tone, whatever.