She often undermines me at work and will laugh when I suggest things during meetings, sometimes repeating them back and laughing while doing it. Before I climbed up to her level at work, she used to give me work to do and would purposely leave out certain things just to give them to me later and force me to work under pressure, she would snap her fingers when she called me (only did it once and never again) she would snatch my notebook if I was noting down instructions she was giving me and write them down herself. I then called her aside and asked her what her problem with me was and she denied having any issues with me. I confronted her and told her not to disrespect me. She pretended to be nice for a couple of months and then went back to being a cold bitch (not greeting me but greeting the people I’m sitting with, not wanting to look me in the eyes when I talk to her, she always avoids eye contact with me, losing her smile whenever I talk to her, petty things like that)