Anyone concidered the possibility she's refering to Palatine?
Many people think she predicted the death of Jango Fett as well, so why not?
Maybe there will simply always be a Sith Lord that is caoable of infiltrating an unsuspecting Universe and reset the chess pieces. We saw this with Palpatine, and recently Jacen Solo. Not to mention Darth Krayt.
Interesting topic though!