Great game, but unfortunately, that’s not it. To be honest, I don’t recall a priestess in the game, though it has been quite awhile since I played it.
The one I’m thinking of predates Fantastic Dungeon Extender. The game starts with the PC, an already fairly rotund High Priestess, getting ready for a meeting with the Lord or Lords of the Realm. Her junior, a plump priestess, advocates keeping her temper.
Calling it a game is perhaps overstating it a little, because there’s really only one choice that effects the ending. In the one path, you side with the corrupt government officials, and in the other, you form a small and prosperous realm outside of theirs.
I cannot for the life of me really recall exactly how the Bad ending went, but I remember the good one. The junior priestess has swelled past the size you were at the start of the game. Hearing you awake, she rises from her chair, needing to push on the desk to heave her mass up. She moves over to the bed the PC is spread across, having piled on a massive amount of weight in the time since she angrily stormed out of the court. There are other priests and priestesses present, all in varying stages of obesity, though none anywhere near as large as the High Priestess.
With the help of a full score of attendants, the PC (barely) manages to rise and make her way to the balcony to address an audience of believers, to be followed shortly thereafter by another feast.
I can’t remember how long ago I found it, I’m afraid. I’m tempted to think it was back on the old site, back when I was posting under the name “hedkrakka,” but if that’s the case, it might be perpetually lost info. Searching on both Google and textadventures has been rather frustrating. I had hoped that maybe it was on DeviantArt, but if it was, I couldn’t find it.
Of course, it doesn’t help that the moment you type the word “Quest” into any search engine, you get literally thousands of results that have nothing to do with what you’re looking for.
Thanks you very much anyway, Hal. I’ll continue my search a bit later, but first, I’ll think I’ll revisit the Dungeon.