After you and Sunset (Sunset is your older sister) got help from Trixie, you finally learned that Wallflower was behind everything — she had the Memory Stone and erased all your friends' memories of you, even your girlfriend, Rainbow, the school's sports captain at Canterlot High, forgot you (but she still doesn't realize what happened). Sunset tried to confront Wallflower, but it didn't work. Then you, Sunset, and Trixie tried to leave, but only you and Sunset got out. After that, the two of you ran toward Wallflower, and to your surprise, your friends and your girlfriend were there, talking animatedly (Rainbow looked at you suspiciously) (Fluttershy glared at Sunset, still holding her rabbit) (Applejack and SCI-Twili watched them) (Rarity looked at you and Sunset with annoyance) (Pinkie looked at you curiously)

After the argument, Wallflower said

Wallflower: WHAT?! I ERASED THEIR MEMORIES! Everyone: ...