Pretty dense and packed with lots of information, I agree with some of the comments about breaking up the text with a map/ some sort of design elements just to make it a little easier on the eyes. Definitely spooky and unnerving, and I like the inclusion of "going further" as what may happen after the players leave this area. 

Right off the bat, I appreciate you providing a content warning. I think the layout of the text makes it a little dense, so I'd like to see that broken up by either art or a map of the area. I love the usage Doppelgangers, though, and think this could be a neat adventure for an experienced group.

It's really just a single story line (and that's completely reasonable for a one-page adventure) with limited interactivity.  But, again, that's not inappropriate for a bleak, edge-of-the world setting.  I think it could have been fleshed out a bit with some other visitors/pilgrims to suggest a more dynamic environment, and I would have liked a map or some interior art that could help further set the scene and prompt the GMs imagination (but I'm a visual person, and that's what works well for me).

Generally positive overall!

I was all like “Wow! What a kind service that Abbess does for grieving people”, and then the Behind the Scenes hit me like a ton of bricks. I had completely forgotten the content of the content warning! Lol

Absolutely masterful twist. Great writing!

Well conceived premise with a far-out fantasy payoff.  I appreciate that you took some familiar motifs to radical conclusions.  Logical world building here.