Celestia has plans for Twilight to bring her to her utmost peak of power. The test in mind has been discussed between the two Princesses, being the best course of action.
((Apologies, everyone that read this story, and everyone that reads this story in the future. I had to remove the music links from the story. The youtube links I provided, and only the ones I used, went private; for a reason unknown to me other than my sudden and random use of them. I apologize to the music developers, and everyone else.))