Why would she know she would become Ultimacia? Only Ultimacia knows who she is and why would she tell her Past self who she is? That's something only a Bond villain would do. Don't get me wrong, I'm not a believer in U=R but Square do leave a lot open here for either a sequal or to activate and captivate you imagination, if it's for the latter, they sould be commended. It's kinda like an artist being asked what a painting means, they rarely say, it's what it means to you, the viewer, that's important, it can lead you anywhere you chose, as is shown here. I guess the moral is, if you believe that U=R is correct, then it is correct and if you don't, it's not, and no one can take that away from either believer.

Oh and on Big D's post, the messanger sleeping in the Garden i believe to be Ellone.