Oh yes teacher, punish her for being a bad girl, and opposing the empire. With you as my puppet teacher we will make all kneel before me! Now keep spanking, I'm close to finishing (gmun)
Aura hypnosis ability is based on mana, she just compares her mana power to her opponent, and the weaker one loses all free will. Frieren is one of the most powerful wizard in the world... so she got cocky, but she didn't know Aura had another ability: