This happened years ago but I still have the save file on which it happened, but the glitch was that the Girl just disappeared from my save file I only have the boy and sprite the girl is no where to be found and her life bar is gone too. This glitch makes it impossible to beat the game pretty much and the save file is also at the end of the game.

I've tried glitching to get her back but nothing worked, I used the Neko in the Frozen Land glitch to warp to the place where you first get the girl in your party and like I said it didn't work. Anyone have any ideas about this?