Vonna has written erotica and erotic romance from spanking to shape-shifting, from primitive tribes to science fiction. Many of those books revolve around capture and or submissive themes.
Freud, if he hadn't been so hung up on his belief that only damaged people fantasize, might have tried to understand dom/submissive dynamics. Looks like he left that up to Vonna and other like-minded writers.
www.VonnaHarper.com