That's only a coincidence... Right? ...RIGHT?
I emphatize with all that stuff about feeling like a piece of artwork was specifically written for you. Especially at young ages when people are more susceptible to be influenced by others. But it requires real shitty conditions for one to develop such an obsession, and at least she didn't become a bad person in the end.
If anything, her cultism (even when gross to the normal person) has truly saved her to a certain extent, but also has rendered her dependent on the ideal image of a goddess to overcome the obstacles. We are no ones to judge her tho, even if the healthiest thing would be for her to be able to overcome life independently having someone to look up to and the motivation to push through your comfort zone are things a lot of "independent" people lack.
The sci-fi themes are introduced kinda late with no real foreshadowing what so-ever as far as I remember. Author might go on that direction if they really want to, but they'll have to make a real effort to keep us interested. This might be an editorial move tho, depending on the magazine this is being published. (I hope is something like Yuri-Hime where artist don't really get axed as easily as mags with broader genres in publication)
EDIT: It's published in Cycomics by Cygames, an app for reading manga for free just like Manga Plus+. So, there's no worries in terms of space-for-print. Popularity is still important tho.