The dungeon newsletter still delivered to Milk's hidden guild, stacked unread by the door until it burns.
A pile of dungeon newsletters remains stacked by the door of Milk's Calligraphy Guild, never read. Because nobody ever enters the guild — its door is hidden, as is the Cartography Guild's next door — she never bothers hiding the papers in the back where crawlers wouldn't see them. Along with her Sustenance Pellets, the continued newsletter deliveries are the only sign the dungeon hasn't completely forgotten she exists.
The dusty pile is the first thing to catch fire when Bianca surges into the room, going up in flames along with her Scroll Linen.
A dusty stack of delivered papers piled by a hidden door, later reduced to ash.
The unread deliveries that mark Milk as remembered by the system but forgotten by everyone in it.