_My princess, my friend,
Here it must end.
Hence forth our futures divide._
_Equestria is weak,
But I'll restore its peak.
Watch as I turn the tide._
It was inevtiable that Majesty and Celestia would find themselves on opposite sides. She had grown too forgiving, too lenient. All because of her connection to her traitorous sister.
Luring them into a trap was simple in conception, difficult in execution, but Majesty prevailed. The sisters would watch from their old castle's ruins as she built a new Equestria.