Original letter here.

Dear Twilight Sparkle:

Is that all you have to say? “Your pet bird is a dick?” Honestly, I thought you’d have something to say about Fluttershy, given how epicly she fucked up.

Then again, I was there to see most of it, so it is probably quite self-explanatory. Not that I don’t already see everything…

In any case, thank you for your compliment! I do my best!

Your very favorite half-troll, Princess Celestia.

P.S.: Tell Fluttershy that the punishment for stealing the royal pet is banishment and imprisonment in the place where she is to be banished... then, once she's sufficiently freaked out, tell her you're just joking.

Author's Notes:

A Bird In The Hoof was, by far, my favorite letter of all.