What's the use? No one wants to accept her as a new person. She tried the best she could to show the others that she's changed, but nothing's working. She can't blame them: who would believe her anyway? That is, anyone other than herself?
After being hit by the Elements Of Harmony, Sunset Shimmer is sent back in time the next day to a week before she went through the portal, and hopes to right some wrongs she has caused among CHS.
Can former villains learn from one another without driving each other and everyone else insane? Discord seems to think so. Sunset Shimmer, however, has her doubts. And the Sirens aren't helping matters, either.