Interesting Lews, this would imply that O could be seen as almost a femme fatale - if the story hadn't been overtly about BDSM (and if you're right, and you could well be) the interplay between her and the men would have had something of that "dangerous and beautiful woman" motive in it. Lawrence Durrell's Justine has a kind of similar angle to it: the glorious and mysterious woman comes across as a Goddess of eastern sensuality dangling the romantic young writer Darley at her fingers, while he thinks she is more or less the prisoner of her high-status marriage, but as the book and its sequels move on it turns out she may have had other motives for the affair....hmmm...