Miorine was the type of person who constantly tried to appear cynical and unflappable in order to assert her independence and never showed any weakness that would make her appear sensitive. She defiantly protested against any attempts to manage her life and make any fateful decisions for her, constantly insulting her father—often calling him "lousy father"—for managing her life or even directly entering into a public argument with him in raised tones. Whenever Miorine felt that a situation was offensive or unfair to her, she always spoke up about it without any attempt to smooth the language.

Refusing to put up with the state of affairs, Miorine regularly tried to escape from the Academy to Earth, or at least manage the life imposed on her, during which she sometimes showed similar traits to her father, dragging Suletta into her fight against her father without really asking her opinion, or hiring all the members of Earth House as GUND-ARM, Inc. employees, only formally notifying them about it later. Miorine justifiably studied at the management strategy, showing a cold mind, excellent leadership qualities and business acumen.