I've scoured the place and only have found two documents (and a bunch of books). None have a password. I took the cup and put it back where it belongs, got the troll back to being a goblin, and it wants out but I can't find a key. Still kind of stuck.
I wonder if it's because I goofed with the troll cave? I opened the right door first, where the shrines are, and have read elsewhere I should have opened the other side, where there is a key to the shrines. So I can't get that other side open (this in in Gula's dig). I've also "fixed" Gula, still can't get in there. I have to wonder if I haven't just plain got to a spot I can't fix, or if there is a bug.
Or (as I hope) I'm overlooking something else entirely.