Talk:My Little Pony Equestria Girls: Legend of Everfree/@comment-26140448-20161002234545/@comment-10390252-20161003082749

It's an older trope than Frozen; a young metahuman being afraid of past sins and neurotic about losing control of her powers dates back at leats to the mid-1980s when Rogue was first introduced into the X-Men as a heroic character (she'd been a villain and Mystique's sidekick before then).