this is probably a story about the woman from the side mission when she hires the counters squad to escort her into the surface world and i think because she's lost her ark citizen ID, got kicked out from the ark, called shikicum and use the rest of her money to hire his squad to escort her, and then she decided to live on the surface world. After a few days or a week (?) later, Shikicum worried about her wellbeing and decided to check on her, only to find out that the building/ruins where her new life began had been overrun by rapture. After a short battle with Rapture, Shikicum found her dead body on the ground.