@Daz:
Thats not in any way reflected by the story though. Espeically considering Violet starts out having no plan, and needing Sanji to snap her into "Actually, fuck Doflamingo!" mode. And "Turns out Violet had canonical sex with the guy responsible for framing her dad for treason, her sisters death, and years of abuse for her niece!" is just… a crazy dark detail to throw into the mix in an offhand column answer.
I'm still believing it to be some misguided joke, and that Doflamingo and Violet are just being mock-affectionate in the scene in question
I mean, its not "forbidden love", no matter what softcore fanfiction might get cooked up. Its Doflamingo banging a hostage whos life he ruined. Might as well have Nami hook up with Arlong- or is that too much because Arlong killed her mom, whereas Doflamingo "only" claimed Violets sister?
this kind of stuff happens all the time in real life with Pimps and their girls
its the definition of an "abusive relationship"