Something tells me that the title is a little wrong, but never mind, the point is that they fuck great and despite the fact that the guy's dick is not particularly big, he managed to bring her to squirt, is this not an achievement, I think very much so. It's nice to watch, the lady is jumping around, riding the guy, as it should be, and he is not lost, helps to reach the peak of pleasure.
The father clearly raised his daughter - Dad is the main thing. You could always find support and encouragement from him. And to suck his cock is just a thank-you for having him. By pulling her on his cock, her father showed how much he trusts her and that secret will be with them now. And the chick did a great job - and daddy is happy and she's even closer to him now.