I guess I just don't see it that way. I think that it's the equivalent to having your prohecy up there, and then having Luke Skywalker lose a round of poker (alright, I'm a big enough nerd to admit that it would be Sabaac) to Anakin. Certainly Batman wouldn't see it in a way that validates the prophecy.
I mean, at the very least she could admit to herself that it has absolutely nothing to do with what "the world" needs and everything to do with how she feels about the League.