My money's on Barnes. Is Tresser's death still even in continuity? Plus "perverted shadow of a meaningful relationship that ended tragically" has more emotional punch than "perverted shadow of a relationship that was a ridiculous clusterfuck from the start and it's still not clear that she ever actually even loved him even at the very end."
Diana better not become some sort of slave for the baddie again this event.
Oh, don't worry, they'll find something worse to do with her this time.