“Hello? Twilight?” Starlight Glimmer called out while entering the Castle of Friendship. “I was wondering if we could—”

“Starlight!” Twilight exclaimed as she teleported directly in front of her. “You’re just the pony I need right now!”

“You need me for something? Well, whatever it is, I’ll do my best to help!” Starlight said with enthusiasm, not only because she still wanted to prove to Twilight and her other new friends that she had changed, but also because she was the only pony in town who would not be reminded of the infamous “Want It Need It” incident by Twilight’s present appearance.

“It’s nothing much. Just a little friendship test to see how your reformation is coming.”

“Oh." Starling deflated a bit. "Well, I suppose it’s necessary. What’s the test?”

“I’m just going to give you a little friendship problem scenario, and you tell me what you would do. Ready? Good. So let’s say that you and one of your very best friends have both been waiting for the release of a certain book. And when you finally get to read it, it’s so good that you just have to talk about it, so you rush over to see your friend. And in your excitement to talk about the book with her, you forget to check if she’s finished it yet, so you accidentally spoil the ending, and she gets upset. Really upset. What would you do?”

Starlight thought about this for a moment. “Well, first I would apologize profusely, of course. Then I’d try to find a way to make it up to her. Exactly how I’d do that would depend on the friend. If it were you, for example, I’d get you another book that you haven’t read yet that I think you’d enjoy. And then I’d be extra careful in the future to make sure I don’t do anything like that again.”

“That’s it?”

“Well, pretty much, yeah. Like I said, the exact details would change a bit, depending on who the friend is.”

“So you wouldn’t, say, use Gold Heart's Obliviation spell to make them forget what you said?”

“Oh Celestia, no! Of course not! I may have almost destroyed Equestria several times by traveling back in time and trying to change the past, but even I know that memory spells are a bad idea. It’s just way too easy for something to go terribly wrong when you use spells like that. Trying to erase five minutes of conversation from a pony’s memory is just as likely to erase five months of their memory, or erase their ability to talk, or any number of other terrible things.

"I'm not saying that I researched memory spells while I was creating my town. But if I had looked into them, which I didn't, I would have immediately thrown the idea away. I only use completely non-magical brainwashing."

Starlight paused for a beat. "That sounded a lot better in my head than it did out loud. My point is that there is no way I would ever use a spell like that on anypony, let alone a friend. Why would you even ask something like that?”

Twilight nervously pawed the ground. “Well, you know how Rainbow and I have both been looking forward to the release of the new Daring Do book?”

Before Starlight could respond, they were interrupted by a rainbow-colored blur crashing through the nearest window. “Twilight!” the blur yelled as it revealed itself to be Rainbow Dash. “Daring Do: The Horse Awakens was amazing! Have you finished it yet? I need to talk about it with somepony or—” Rainbow suddenly stopped talking and crouched in a combat stance as she noticed the other pony in the room.

“Twilight,” Rainbow hissed while keeping her eyes locked on Starlight, “what’s she doing here? She’s probably going to try to take away our cutie marks again and turn Ponyville into another creepy town.”

Everything finally fell into place for Starlight. “Oh. I see. Well, come on, Twilight. We'd better see if two of the most magically talented unicorns of this age can’t find a way to fix this.”