I MADE IT BACK! Sorry about that, we went to my boyfriend's parent's house in the middle of nowhere, USA (Like Courage the Cowardly Dog) then I had two EMT cliinicals back to back. But I am here now! So anyway this idea in my head,
You gotta bear with me here.
It's based off of a "My Little Pony" fanfic universe in which Rainbow Dash was made an alicorn instead of Twilight but not because of magic but because she was Celestia's illegitimate daughter. Rainbow naturally struggles with magic. My idea was that Celestia (with the help of Twilight to convince her) enrolls Rainbow Dash in Magic Kindergarten. Rainbow begrudgingly agrees, and as she goes through the curriculum of the course she is slowly regressed, becoming the foal Celestia had always wanted but never had. Here's a link to the actual fanfic. It's my favorite.
http://www.fimfiction.net/story/19341/alicorn