Again I think your missing my point. I didn't say her reasons for coming home were nefarious, or perhaps even unusual for someone with a recently diagnosed medical condition.
However most 27 year olds do not have crohns. And most 27 year olds living in NYC don't come home every 2 wks. So was it unusual for someone with a condition to perhaps come home more frequently, perhaps not. But she would have been in a minority category doing so, as the majority of her peers are likely not suffering from chronic conditions. Therefor she would still be in the minority for 20 something in the city leaving for home with that frequency.
Again not that she was doing anything wrong persue, but that her frequency of returns to home is not typical behavior of others in her age group living in NYC. Again maybe typical of others in her age group with chronic illness, but still in the minority overall. So regardless of her reason for doing so having the most practicality and validity in the world, it's still a-typical behavior overall.
I guess I am missing your point in mentioning that, because we aren't talking about "most 27 year olds", we're talking specifically about her and her circumstances. I'm failing to see how it's even worth mentioning that it's atypical behavior for someone in her age group/career/location, but that it's typical for someone with chronic illness. It either makes sense for her or it doesn't, and IMO her visits can be reasonably explained.