We see in one of the latest episodes where Applejack is being a realpoopthat Rarity had a contingency in place to stop her overly-truthful rampage. Do you think Rarity, after Fluttershy got turned into Flutterbitch by the minotaur, Twilight went crazy in Lesson Zero, Pinkie fucking lost it in Party for One, and Rainbow Dash blew up the weather factory in that one hibernation episode, and finally Rarity herself got possessed by the book, that she created an entire network of ponies to stop any over the top uses of the element's true nature or turning their backs on their true nature? I'm pretty sure she does.