User blog comment:Scarletwind/Chapter 254. Thoughts, opinions, theories./@comment-4078901-20111003083948/@comment-4488668-20111006165040

Well Fairy Tail WAS founded by an actual fairy, but I don't think that that mysterious girl was actually Mavis Vermilion (that name sounds much to male to me), however I do think that she is a fairy and I like your theory that they travelled into the future. They probably then travel back after some huge future adventure because it would probably heavily damage spacetime and then they come back right in time just before Acnologia destroys Tenrou Island and the Time Travel arc is over.