User blog comment:Miskos3/Fairy Tail Spring Festival: Special Chapters, Review/@comment-24467372-20140330163552/@comment-7418318-20140330213756

If she really is a Fairy, maybe she has the ability to become invisible, except to the ones that are connected to her (through the mark).

If that's the case, maybe she only fake her death so that her seeming eternal youth wouldn't attract the wrong attention and she is actually still alive.