I hope that the theme isn't 'reforming bullies with total submissiveness and self delusion'. Yes, Otto's got problems but the girl is no longer able to face reality.
Also, if 'cool' girl knows who Otto is and this is the post Superior Otto, is taunting him really a good idea? Everyone on the planet knows who Otto is due to his giant orbital microwave cannon satellite scheme where he threatened to wipe out all life on the planet and he successfully had the governments of the world pay him billions to stop. Ok, so she blabs and gets the Avengers involved, fine, except she's just made an enemy of someone willing to glass the planet. And he holds ridiculous grudges lasting decades. And she knows this.