Companion One-Shot to "Magic in the Stars". If you do not want to be spoiled regarding that story, avoid this until you read up to Chapter 20, "Common Ground", of "Magic in the Stars.

Late one night, Twilight Sparkle is up late, as she often does, writing a letter. But tonight is unusual in that this letter is not to her mentor, Princess Celestia. But as she struggles to find the best way to convey what she wants to say in her letter, she is interrupted by her assistant, Spike, who inadvertently makes an accusation that may be closer to home than Twilight ever considered...