"Miscellaneous, I really don't think he has any intent on seeing her naked. I'm not being niave, either."
I can understand that. But as the result of his behaviour will be to see her naked, if sort of doesn't matter what his motives are, he's still forcing her to be naked in front of him whenever he chooses... Which is what abusers do.
He cannot divorce his behaviour from an abusers behaviour when it's the same behaviour. So whether his motives are about power through control or power through sexual control, he's in a territory no good patent would ever, ever want to be in. And the fact that he thinks he's special so should be allowed to deny his daughter personal boundaries, well, it speaks volumes. Whatever he thinks it's saying...
So, if he isn't an abuser, he needs to stop acting like one. If he doesn't want people to think he's an abuser, he needs to stop acting like one.
To contextualise, my parent/s imposed their power on me and smashed down my boundaries, privacy and body autonomy. But they'd be suitably horrified and deny any such thing ever happened. That's because I wasn't allowed any ownership over myself, so it didn't matter what they did to take my privacy, dignity and boundaries... Therefore no harm was done.
Believe me, a huge amount of damage was done.
It was hell and I was driven to extreme lengths to try and maintain some kind of body integrity and control. I did write why but decided is too personal, but it was extreme though I blamed myself for years. It's only now decades after that I realise my desperate secret ways to have ownership over my own body showed how terrified and distressed I was, not what a freak I was/am.
And of course I was a sitting duck for any abusive relationship. Like having a target on my back, and a tshirt saying 'I have no boundaries and I don't know I can say no'.
I've got better at enforcing my privacy and not being guilted, scared and manipulated into falling in line. It helped when I finally realised I could walk away from their house. Get out of there.
The one still alive continues the game in the very infrequent contact I'm guilted into. Still pretends they don't understand basic privacy and respect for others. Gets 'confused' about how the basic etiquette of how 'knock, answer, come in' works. So, so confusing right?
Their confusion started when their cardboard cut out dd started to act like a real person. After the rage and bullying stopped working, and then the shaming didn't have the desired effect. It's onto the poor ickle me I'm so confused and rejected crap.
They pretend that it's all just a misunderstanding and they're trying their best (to ensure they do what they've always done). Knock becomes a slide in very very quietly, then stand there staring in disgust and/ or commenting. Or staring into the toilet bowl (!), after barging into the bathroom, or listening outside the door (having tried the handle and given it a good shove to see if the lock will break). And then it's all pretend shock and upset 'I know you don't like being disturbed so I came in quietly... (To stare and judge and comment'). When they were clearly and repeatedly asked to knock if the door is shut. Wounded horror and then repeat ad nauseum. Knock you sick fuck, just fucking knock.
Just another way of exterting power over me. Still. It's disgusting. But hey, it's only a door right?!
Me and so many other posters are sharing the effects of being brought up in families that refused to acknowledge fundamental needs. Maybe your dds father can stop this happening to his children. If he can see the damage he has the power to do.