Dear Fluttershy,
Two days ago I sent a variant of poison joke characterized by an unusual pink hue to my faithful student Twilight Sparkle. She sent in the first of the results to me a few hours ago. However, the information she shared was was very vague at best. All I was able to understand was that you, Fluttershy, were the test subject. Furthermore, Twilight told me to come to you if I wanted to learn more about the results, though she did not explain why.
Therefore, I would be pleased if I could welcome you to my castle in Canterlot tomorrow at noon, as long as you aren’t occupied with other matters, of course.
Enclosed, you will find a first-class train ticket to Canterlot and back. Should your visit take longer than expected, I’m inviting you to stay at the castle for the night.
If you cannot make it, please inform me by speaking to Spike; otherwise I’m looking forward to your visit!
Signed,
Princess Celestia of Equestria