What do you mean by “victimized”? Sorry but that doesn’t tell me a lot so I’ll make some guesses.
It’s pretty normal for an adult hen to dominate a younger cockerel until he matures enough to become a rooster and dominate her. Sometimes the hen won’t willingly accept her loss of dominance and fights back but the rooster is bigger, stronger, and even more determined than she is. This can take all kinds of different forms.
The former cockerel exerts his dominance by mating with the hen, with her being willing or maybe not. Often her resistance becomes more running away than actually fighting. It sounds like this may be what is happening. But for him to actually dominate her he has to mate her so he chases and forces her. The rooster needs to be the dominant one or he can’t do his various jobs.
A lot of times this transition is pretty peaceful but I had this situation where the young rooster went out of his way to chase and attack the former dominant hen for a couple of days, not just force mating her but pecking her and grabbing her, especially around the head. After a couple of days of this behavior she quit resisting and accepted him as the dominant one. After that they were best of buddies.
In my case there was no dominant rooster, the lead hen had assumed some of his duties and was flock master until that cockerel matured enough to take over. If you have a dominant rooster and the cockerel starts bothering the hen you’ll still see some of this behavior but most of the times the hen just runs to the dominant rooster who takes care of things. Chicken society can be fun to watch, but sometimes it is violent.
The risk is that the hen becomes injured during this transition of flock leadership. As long as she doesn’t get injured they’ll work this out. If you wish you can separate them for a while and give him a chance to mature some more. That might make the transition go smoother but at some point they have to go through this leadership transition if you are going to keep them both. It’s just the way chicken society works.