The Replacement Letters

Dear Princess Celestia

You never told me, or the world about having a sister. Well...your SISTER is coming back! It is imperative that you get the royal guards ready to fight her. But this time, turn her into an earth pony and send her to the dungeon.

Also, I'd very much appreciate it if you wouldn't be so secretive. You didn't tell me or the world that you have an evil little sister. With all these secrets, I wouldn't be surprised if I'd find out about some lost civilization populated by some crystal ponies and ruled by some overgrown black unicorn stallion who resembles a ghost, or that you plan on changing me into an alicorn, or maybe something as outrageous as my brother getting married to Cadence.

Just come clean, your subjects deserve THAT much. If you keep secrets so much, they might revolt and put you and your family on a guillotine and start a new form of government where the ruler is elected, and can only serve for four years, and serve at most twice. Be warned.

Twilight Sparkle

PS: I might even lead the revolt.