Madam Ru
Well our mc should be able to handle all kids at the same time blindly in combat. Srsly this time extending limit in learning space , the learning space itself and her will to endure the harshest training. There should be only the elite adults capable to fight her. Hopefully there wont be some plothole..like fighting with nearly full power or so.. she should only need to use 10% of her power in the competition or fighting against average adults.