They're all free range and I have 6 hens. It's really only two roosters (I have a bunch of young cockerels that aren't going to be around long enough to be interested). I know that's still a high roo to hen ratio, but this is the first time I've had a problem and it's just the one hen. I don't know what it is about her.
I think I'm going to process the one rooster. I'm on the fence about the other. I just think it's really odd that they singled in on her.
Culling the more aggressive rooster sounds like a good plan. Are any of the cockerels of interest to you? You could process both older males and introduce a young cockerel. The hens could teach him better manners.