@Chaosfox Yeah, I think so too.
Also, about the ravine market town from few chapters ago, I think it's likely that she's been around for a very long time, helping and making stuff to the people there. It was said that it was the oldest(or one of the oldest, not sure) magic market like that, and based on how many of the people living there are linked (species-wise) to the war (which we now know was 500 years prior), the place likely began not long after the war was over, aka not long after the deal with the Mother world entity.
From the way Nina is being treated by the people living there, since those chapters came out I felt as though that might have been from her helping the town for generations. Like, she sometimes doesn't go for years and then passes by, or she comes by about once a year (with lots of deliveries), and maybe sometimes a few times in a year. Anyway, my point is that the way people treated didn't seem to be just like a celebrity or like a person they are grateful toward. In this case, it instead felt like the people there grew up with her passing by from time to time and that it's been like that for generations. And like that supervisor lady said, she's kinda being "worshiped" as Mother Nina by the people there.
I don't think the people's habit of giving her so much stuff (and for everyone there to treat her the way they do) is something that would like that if Nina really was the age she looks and had only been helping the town for a decade or two.
I had also been wondering for a long time why the world powers don't try to monitor her much(or at all), but then it was revealed (in ch10 if I recall correctly) that the talking hat is there for that precise purpose. She already had that hat in the past where she looked in her late-teen/early twenties in chap 7.5, so I wonder how long ago that was.
Finally, if Nina really is connected to that Mother world entity, then based on the deal made with it, it would make sense why the world powers also have such a hands-off approach with Nina.