As long as you're consistent throughout your story arch, the details such as that don't necessarily have to line up with what other parts of the story say. I believe there is one branch where Lady Vessa has large breasts where when I introduced her I mentioned that she is a bit more of a petite girl.
I find it kind of funny when people suggest that A Fantasy Dynasty has pretty consistent lore, because more often than not my default answer is "Do whatever you want. As long as you don't contradict yourself or go too off-base of the Writer Resource Page".
I really need to update the Resource page...
The closest thing I've written to a bondage scene was this one from
Age of Darkness. So unfortunately I'm not really one to be asking for advice on that subject.