Her affliction was one of the heart, not the brain. She felt things too deeply and acted on those feelings, and for that there was no known cure. It would explain why all those medicines never worked.
Her condition was related to her heart, not her mind. She experienced emotions very intensely and often responded impulsively based on those feelings. This depth of emotion was her defining trait and made her unique. Because of its nature, it was incurable, which explained why all the medications she tried were ineffective.
Her emotional sensitivity was the core of her being, influencing her actions and reactions. Despite her earnest efforts to find relief through medicine, nothing could change the deeply rooted emotional nature that defined her personality and behavior.