You know what’s fascinating? It’s when you have this small moment early on in a show that will just be shrugged off, but then the writers acknowledge it and expand upon it. That’s pretty much what “Amending Fences” does.
Apparently Spike immediately starts the plot by reminding Twilight how far she has gotten since the first episode, and how she wasn’t great with friends in the beginning. This reminds Twilight of her friends from Canterlot, whom she cannot remember their names. Wait, I thought Twilight wasn’t the one for making friends when the show started and only had her brother Shining Armor as her best friend. Whatever.