She produced one song and she was always a 'megalomaniac'. ESPECIALLY during her début era, when she wasn't ****. Not sure what you're talking about.
Oh yes, you're right the signs were there even in the beginning. I guess to an untrained eye it could be confused as confidence or self-assuredness. But she was also on a tighter leash and when she was allowed a little more license...well...the fallout is like a biiiiiig mushroom cloud.