Responses
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Yes, it happens in real life too. For some women the reality of their husband being the one at fault is too terrible to bear, so they stay in denial about it and put the blame on the kid instead. Or, if the husband is a violent/abusive person in general, the wife may be too worried about her safety/the family's safety to confront the husband, get the police involved, etc. and decides it's better to ignore the problem. I would want to hurt anyone who'd hurt my son in such a way too but in some situations it's just too risky. There are some really crazy abusive husbands out there.
In every yaoi manga I've read where they're sexually abused by the (step)father, the mother always blames the kid. "Don't come onto my man!" Uhm...I can't help but wonder if it happens in real life. If it were me, I would've killed/badly injure the man hurting my son. What's your opinion?