Besides the conventional storytelling, what works in the closing section of the movie is the way how the tales of two sisters remained compelling connected even after all the melodrama and the decisions of staying far from each other. Conversion disorder is present when we don't want to face the realities around us so we unconsciously decide to stop sensing and perceiving some realities. It's refreshing to get a touch of conversion disorder in the story, of course rarely used in the cinema. I would recommend watching the movie, it's mostly fun and touch of humor.