Talent wasn't one of the things he mentioned but owns.Originally Posted by Kraco
Perhaps Being X couldn't influence genetics/talent. Or perhaps that very talent is part of Tanya, and Being X didn't change any of that since it wasn't part of the deal.
Being X also said he was overworked administering 7 billion people*, which suggests he only looks after the real world, not the Magical world. He could have just dumped Tanya into another Being's shitty world and asked for the same parameters as per deal.
*It's funny how the being chooses not to reincarnate faithless beings, but the human population keeps growing. Someone can't maths.
@Ryll: I think the timeskip was necessary, especially to give us a first-impression of Tanya as she would appear to her subordinates. We've also been shown her to be very verbal in acknowledging God. Even during her dire fight she spoke nothing of him. That alone has me curious as to what can change her.