Would anyone else have preferred (spoiler)...
...if they did actually end up locking The Handmaiden in the mental asylum i.e. the Lady betrayed her lover? That would have been brutal.
It’s a great film but what it lacks compared to the director’s other hits is an emotional kick-in-the-noggins kid of ending. Instead it’s rounded up quite in a bit of a contrived way, like the two villains dying in the same room at the same time. Obviously the story would require a bit of further development for this to work, like why she would choose the guy over the girl.