Fixed the description to make the story a little more nicer.

Instead of banishing her to the dungeons, Chrysalis exiled Twilight to another reality. That reality was that of the Powerpuff Girls. She was born a human in the 70's, and despite being a human, still has powerful magic. She ascended into a Puff, and became a 5 year old forever. Since she practices every day, her magic is more powerful than that of Celestia. She is best friends with Blossom, Bubbles and Buttercup, and is enemies with the Rowdyruff Boys and Mojo Jojo.