Grand picture. You were right to include those sins she’s done. But you’re missing a few such as the Lesson Zero affair, the prjurdycing of Zecora, the prejurdicing of Dyscord including how she reject him, the Pinkie Sense affair which nearly got them eatin by a hydra, the support of Rarity in her wing stunt, the hurting on Moondancer, the prejyrdicing of Trixie, the Storm King affair including how she try to rob Queen Novo and how she hurt Pinkie, when she upset Flurry Heart, how she doubted Starlight during the episode when she switched Celestia and Luna;s Cutie Marks, lied to Celestia, and neglec tto help Sunset and co in the Friendship Games.

It rock if you can do one involving Rainbow singing Scoodaloo as comfort. ‘You’d be here in my Heart’. And they’re in Tarzan’s Treehouse. And Jane Porter and Windy react with grins.
Also it be grand if Twylight, Applejack, and Rarity were hautn by Furies to ‘One of Us’ from The Lion King 2’.
ALso grand if Twylight sang ‘Better than i’ froM Joseph: King of Dreams’.

In my headcannon, Twylight’s errors and more including the Storm King affair backfire with Opaline’s actions. And Twylight sees her errors cause this so she self-banishes. And ends up frozen until found by Sunny. And Sunny helps her. Even after learning ehr sins, Sunny chooses mercy and forgiveness; her love healing Twylight.

Yep. She mess up. She betray her sister figures and her little brother figure. All over her petty ego.