I swear to Celestia, one of these days that mare is going to get somepony killed or worse. I almost suspect it's already happened and Hasbro is just sitting on the footage.
Seriously. Levitation or teleporting is fine, but you do not buck around with mind control or transformation spells unless you are absolutely sure that nothing will go wrong and that you can fix it when it does anyway. You'd think she'd learn after, I don't know, accidentally brainwashing pests into destroying the town, or unleashing a transmissible-by-sight plague of madness that wasn't stopped until Princess Celestia herself intervened, or accidentally swapping parts of her friends' souls, or accidentally transforming her friend into a horrible bat-pony abomination, or transforming herself and her friends into tiny vaguely-insectoid creatures and venturing through a closing portal to another world and only barely making it back in time.
Even plot armor isn't infinitely thick. Someday it's going to break, and I don't want to be watching when it happens.