Hello.
Professional gamer here. IF you have actually played the game you will understand why monika has 'superpowers' and why all the girls killed themselves. if you payed attention youll know monika who is deeply in love with you doesnt want you to be with any other girl and shes pretty much a god of the world due to her title as leader of the doki doki literature club and set all the girls obsessive and depression level to max so she could have you all to herself but once you delete her file its sayori who becomes the leader of the club and obtains the administration powers.