Since this blog has gone through long bursts of inactivity, felt it best to refresh my headcanons about the Abandoned Shopping District and about Shadow Saki.
Saki takes 'care' of the lesser Shadows in the district. Even though her Arcana is The Empress, Saki treats the little blobs something like a cross between kids she's baby sitting until they grow stronger/mature and go on to other sections of the world and little noisy pets rather than 'subjects' or servants. Though given that the Empress Arcana represents femininity and motherly traits, her nurturing behavior towards the Shadows makes more sense than her lording power over them.
Shadow Saki is a lonely individual, but when people or other Shadows cross over into her territory, she gets very antsy, irritated and in the worst cases resorts to acts of violence. Because it is hers. This place was made for her or she was made for it. The details don't exactly matter to Shadow Saki.
On the other hand, she loathes the shopping district. So she'll often indulges in violent fits where she'll break windows, tear down parts of the store or up root bits of the sidewalk. Her environment changes to her malicious whims, but by the time the fog clears, it's back to normal, thus feeding her frustration at nothing changing for better or worse.
She can't willingly leave the district. Much as the environment reacts and breaks at her whim, it also binds and controls Shadow Saki to remain.
The main portion of the dungeon (a mash of Junes Lobby/the Konishi's Store + their bits of their residence) is a lot bigger on the inside than it looks.
Most populated by Lying Haibels and a few other weak Shadows, most being ones Saki took care of and released, but they stuck around to protect her home.
There is 'graffiti' like markings on the walls of the main dungeon. Most of them being snippets of conversations/gossip/rumors that Saki has over heard about herself. For all of the destructive forces she can wrought on the Abandoned Shopping district, oddly enough the graffiti always stays in tact.