Cool! :D It's more complex than that in canon, but that's the version without getting into gritty plot details and how Personas work and all that stuff.
I'm currently kind of fiddling around, working out options as to how I can leave it open for her to come back/be revived, and considering throwing a few other bits and pieces out for folks to look at: P3's final boss is a good ol' end-of-everything-bringer if such were needed.

But anyhoo, glad you like: now time to get down to the fun business of writing it up properly~