I don’t think he did anything wrong, she was free to get up and leave at any time.
I see some are saying that it is ok to evangelize at the workplace. I am so nervous about supporting this because one day the Muslims are going to want to do this and I don’t want to hear it. Also I was at work when one of those born agains were trying to convert me. It really is uncomfortable even after I told her a hundred times that I am Catholic and leave me alone. Finally I literally had to yell at her to get away from me while everyone turned to see what the fuss was. Unfortunately that is what it took. Thankfully she left me alone after that.