Wife guilt tripping, maybe cheating on me

My (30m) wife (26f) of six years has been picking fights with me for a while. When she stays late at school like this it puts me in a bad position because I can’t cook.. I also don’t like her staying after work with male coworkers. She knows this. Nothing has happened (that I know of) with this guy, but it seems like common sense to be uncomfortable with your wife spending an hour alone with another man.

She says I’m being unfair. I think it’s unfair to put me in this position, and then bring up my job search to make me shut up. What sort of manipulation is this?