6th Gen Whatever happened to the Lumiose Ghost Girl

I am of course talking about the girl who says "No, you're not the one" when you go into an office block in Lumiose City of X & Y. Was that mystery every solved. I was a little freaked out by this when I discovered it.

apparently you can meet her again in a hotel room somewhere too, according to a youtube vid i watched on creepy things in pokemon but i've personally never found that second encounter. I'm assuming she was a teaser to an event or something that never got released

a quick google search suggests that it still hasnt been solved however :(

You see her again in ORAS at Mt. Pyre, but she basically just does the same thing again.

So it was never solved. It (and many of the other mysteries of XY/6th gen) probably won't ever solved since Game Freak seems to be fine with abandoning Kalos.