This story is a sequel to Chaos' Intervention.
'She was supposed to die! The lightning and fire we sent should have killed her! Why didn't she DIE?!?' the Spirits of Harmony panicked, their testee having escaped.
"Well, Spirits," Batman began, "You either die a hero or live long enough to see yourself become a villain," he paused, switching flash-cards to his next statement, "Twilight is about to start living by the classic phrase 'if you knew then, what you knew now, what would you do differently?' and she's going to do a lot of things differently" the dark knight explained, before gliding away with his cape.
For 3 years, Twilight Sparkle has been being watched, and the past 3 years have happened to her over and over again, literally 100 times.
Luckily, Twilight had been inching towards an escape from this nightmarish circle, and after 300 years of testing and failing, she had awoken.
Now she will become Twilight 'The Most Dangerously-Genre-Savvy Mare in Equestria' Sparkle, with the future laid out in front of her, she's going to do things differently.
She's going to do things right, and wrong, she'll be a beacon of power, the likes of which have never been seen before.