The thought that crossed my mind when reading about that therapy was that maybe part of what the person liked about mobster movies was the grit and the banter and the danger--none of which she'd get from rom-coms. I was seeing how the attempt to change the narrative could backfire, if she found the movies boring or stupid. I think if I were the therapist, I might have tried to get her to watch something that had more of the gangster vibe, but where the hero actually liked women and was good to them--and where the women had some agency and power, too. I vaguely recall that the Shaman King anime featured a relaxed, friendly guy who nevertheless was powerful and could triumph over the bad guys, in part because of the ties of friendship that he made (or maybe that wasn't the reason he triumphed, but that was part of the constellation of traits that made him appealing)--and there was a powerful female figure in that series. (I forget all the names. My memory is terrible.)
Re: Romance