I can't see male on female rape being too prevalent in their society as a whole. I would hazard a guess that if it exists, it would probably be treated like female on male rape was until relatively recently (the attitude of "shut up, you enjoyed it"). You've got to remember in this world the women are far more sexually aggressive, generally stronger (as men are kept protected and doted upon also without any masculine traits that exist in our society), and the dominant sex by a significant margin.You know what, based on the reactions, I'm making the bet that hinata's father left her mother or hinata's father seduced / raped her.
If anything it seems like he left her after she got too scarily clingy for the guys of that world or she potentially raped him after misunderstanding him being 'nice'. To put it another way, she acted like the girls we've seen so far act in their fantasies.
edit: He may have taken advantage of her monetarily given the first page