It's quite lovely to imagine a tormentor having unlimited power over a beautiful victim, and I'm certainly not going to object to that.
But I've [also] mentioned to King Diocletian in the past that one of the things I enjoy about his stories is the sense that the assailants are under their own restraints- that propriety, or law, or the oversight of someone of a superior rank prevents them from going as far as they would like. That creates a kind of sexual tension that can, in and of itself, be quite enjoyable.
But for me, that pleasure is increased manifold when the assailant finally gets a chance to do what they really want, and the pressure of that tension and frustration then explodes in their treatment of the victim. That they be punished in effect not just for having aroused their captor's lusts, but for his being kept from sating them, even though neither is her fault.