Well if her body is rapidly deteriorating as it appears, then she couldn't really stay near Sochie, because they would know it wasn't Kihel. Although I imagine Sochie would be okay with it, as she admits the two have basically become like the same person. Would be kinda hard to explain to the town why she was using a cane already though
And I did notice how they suddenly gave her a much more mature look at the end of the episode there than Sochie normally had.