Ah yes, the lure of the myriad of alternate universes and different paths that could have been taken.... I understand completely. :)

I think there was an interview done recently where Jared explained that the first half of this season is really about Dean, and the second half is going to be about Sam...so, I think what we have of Amelia so far isn't enough for us to get a clear picture of who she is - because they haven't given us enough information ON PURPOSE...so, yeah, I think that's to come. Who knows, maybe we aren't supposed to like her?