Alright, bad news, I have no idea what caused the problem. Good news, I fixed it, for your save at least. I couldn't find any event that should turn the switch that makes Brittany disappear off other than the event that unlocks the dungeon, so I have no idea how you got that to happen. Did you use the dungeon skip option at all? My only other guess would be whatever cheat engine maybe causing an issue, somehow. (I'm assuming that's how you got 999,999 silver at least.) In any case, I turned the switch back on and saved again, so if you download this save folder and put it into your game, and then load from slot 14 and go to the guild it should work as intended. Let me know if there are any other issues, thanks. (I made that save by loading your slot 13, so if you wanted to continue from a different save let me know and I can edit whichever one you need.)