Question concerning Jill

[Flying Arrow]

How does it at all imply she knows Barthandelus' plan? It's possible her 'perfect plan' is just whatever Bart wants her to think it is.

Reading the line again, it barely makes sense, although maybe because I don't remember the exact context in which it was delivered.

EDIT: Just found the scene on Youtube, and she says "For every task, there is a perfect tool." I'd say that the line is meant to be ironic considering how she manipulated Sazh and, later, her fate as Barthandelus' expendable tool (Jihl as the overzealous, overachieving opportunist and blind follower; perfect for a government-run cleansing campaign), but that would be giving SE's writers too much credit. I'll stick with the 'vague, meaningless BS' interpretation.