This is probably coming out of left field, and there's doubtless plenty of evidence to counter and disprove it, since I stopped keeping up with the MS a patch or so ago, but considering the Scions have started helping Ishgard, is it possible that the WoL and Minfilia have some sort of falling out? It may just be my perception, but with the fact that you hear Minfilia's pleas right before the WoL uses the staff, it looked a lot to me like some kind of betrayal... Is it possible that the revelation could have caused the WoL to split away from them? Probably not, but still, it got me thinking...