Let's look at this situation off-line. She sends her CV to a person within a firm who may have work for her. As is often the case, these days, her photo is on it. He replies with comments about her photo. Yes she can ignore it and never contact him again but this may, in itself, cut her off from some jobs. She could, as she has done, made the point that this is unacceptable from someone in a position to influence her future employment. I imagine she knew she could have problems doing this but why should she be the only one to be affected by his inappropriate behaviour. If anyone should be thinking about the repercussions on his family surely it should be him. He is an intelligent, well educated man and he knows the law and the influences of the law. He is a fool and an unacceptable fool.
As for how you would advise your daughter, as I have said my sons is on LinkedIn. If I suddenly became aware that he had replied to someone, who had contacted him because he had the power to help work-wise (as they might well do) in the way this man had done, I would be mortified by his view of women in the workplace, his view of his marriage, and many other things besides, and he would deserve all the opprobrium that came his way.