Sunset Shimmer was a traitor. Rainbow knew this deep in her gut, but her recently reunited friends didn't seem to see that. Now that Twilight was back, even if she did insist on keeping herself hidden from the rest, it was all too easy to let her relieve her of the promise to befriend Sunset and not to interfere when Nightmare Moon came to call. She'd even been promised that she could join the hot new group, the Shadowbolts. Even so, when she saw her friends defeated and Sunset begging for her help, she knew that there were times when you'd have to decide who was worthy of your loyalty.
Equestria Girls © Hasbro