It's not like the guy raped his daughter though, it's consensual. To condone castrating a man with bread knife is rather creepy IMO.
I mean, who knows why the 17 year old dated the 60 year old. Maybe he was buying her a lot of nice things, maybe she just has a weird old guy fetish. But if it was 100% consensual and the guy didn't do anything fishy (like give her drugs or some weird mind control), then the father had no right and deserves all the punishment he's going to get.
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