There's a glitch when it comes to the second mine quest. If one of your troops go down (in this case: Emi) and you complete the quest you can't get them back, you can't re-enter the mines after you've been warped out, and you can't exit any dungeon you enter. so essentially, if this isn't fixed ill have to make a new game. And I've already unwittingly saved, so no going back for me.