A girl I invented is actually real, What should I do?

About a month ago I was on a trans Atlantic flight and decided to write a short story involving some random guy and this girl. Now the guy is unremarkable but the girl in the story was described specifically. Now (about a month ago) school starts up and there’s this girl in my class thats pretty much like the one I invented.

By my definition these things seem pretty random as far as personality goes. I mean, what are the chances that someone like this would even exist? There is absolutely no chance that I could have known about her before I meet her. At first I just thought that is was a weird coincidence but after talking to her I found out something more weird was going on.