"Vanitas, obviously." he simply replies "We've traveled through time and universe to find a solution and save you, we would have managed to save you. Not to mention, you did what you did on your own will back when you divided Anima."
"I do not lie!" he replies "Why did Vanitas save you? Do you truly think he or Xehanort care about you?"
Valhalla
He turns to her with the Philosopher's Stone in hand.
"You gave me the idea." he replies "When you said you'd strip her of Godhood. She said you couldn't, but thinking about it, this is a very logical thing to happen... And I found a way to neutralize a God power."