|Manipulating the game files in certain ways can cause Monica to scold you in-game. If you locate the game's save files (the location will be dependent on what platform you are playing on and your operating system) and make a backup and then try to restore it after the game wipes all the in-game saves (e.g. trying to load a save from before Sayori's confession after the player character tells you that this isn't a game where you can go back and reset), you will receive an in-game error message that the save is corrupt and cannot be loaded. Monica will then appear and accuse you of trying to cheat, before calling you silly. Similarly, if you create a backup of Monica's character file and try to restore it after it has been deleted, Monica will tell you to stop playing with her heart, then re-delete the file.