I remember watching people going through the story saying something to the vein of: “This seems super important, I’ll be interested in seeing the payout later in the story”. They’ll be waiting for quite a while it seems (specifically for the cost she’s meant to be paying for seeing). But they get around everything by saying “Ah, magic aether ink, of course”. I guess the ridges of stone also have corner aether or something, I don’t know, imagine they’ll just hand wave most of it