I don't know how to phrase what I want to say without sounding callous, I don't mean to be, this was a problem I used to have.

Don't give her the power over your emotions and your self worth. Own your own power, only you have control over how others make you feel. If you aren't in therapy look into finding a T who can help you with not letting others control your feelings. It will also help with your professional work. If I could post links on here I would post one for you. You should be able to google "owning your own power" and get something that says this better than I am right now.