Georgette Lemare hails from Ballanton, a Lower Norman countryside town in Gallia, where her parents ran a small inn. Assisting with inn duties during her childhood honed her proficiency in housekeeping tasks like cleaning and bed-making, skills she carried into her military career. Her magical abilities manifested early, prompting her to volunteer for the Gallian military and qualify as a Flight Witch. She gained initial combat experience during a Neuroi attack, flying a P-36 Hawk Striker to achieve her first Neuroi kill before participating in the Gallian retreat. She defended the Brest naval port near her hometown and later escorted the Gallian Navy, including the unfinished battleship *Richelieu*, to Dakar in West Africa. Stationed in Dakar, she defended the fleet against Neuroi attacks, credited with shooting down three in one engagement. Records indicate she used an Armurier de l'Aéronautique VG.33 Striker Unit with a distinctive yellow and red paint scheme there.

In 1943, following the reorganization of Gallian air power into the Free Gallian Air Force with Orussian assistance, she received a commission as a Pilot Officer. She transferred to the Normandie-Niemen squadron before joining the 502nd Joint Fighter Wing, the Brave Witches. Flight Lieutenant Aleksandra Pokryshkin personally invited her due to her recognized combat tenacity, exceptional defensive techniques, and notably potent healing magic.

Her personality blends a gentle, sweet disposition with world-wise pragmatism and strong common sense. Despite her talents, she occasionally felt inadequate compared to more combat-focused squadron mates, believing her supportive role made her less essential. This insecurity sometimes surfaced when her healing magic failed to fully repair injuries. To compensate and feel useful beyond combat or healing, she frequently performed housekeeping tasks like tidying rooms and making beds for other witches, habits rooted in her upbringing. These actions could lead to frustration if others interfered. Her squadron members highly valued her contributions, recognizing the uniqueness and power of her healing capabilities.

Georgette possesses exceptional healing magic, similar to Yoshika Miyafuji. Using this magic significantly accelerates her metabolism, requiring constant caloric intake to prevent becoming underweight and weakened. Activating her healing abilities also raises her body temperature, causing overheating and accelerated fatigue. Her healing aura generates considerable warmth, providing comfort to recipients. This warmth demonstrated unconventional secondary applications, thawing frozen objects or warming cold items within the aura's radius when in contact with a living recipient. Official records note employing her magic for thermal purposes was highly unorthodox and documented only once.

While serving with the 502nd in Petersburg, she participated in reconnaissance and combat missions. One notable mission involved traveling to the frozen town of Petrozavodsk with Hikari Karibuchi and Sadako Shimohara. A Neuroi-induced blizzard immobilized them, and Hikari suffered severe frostbite. When conventional healing proved challenging under extreme conditions, Georgette and Sadako used body heat to warm her. Georgette expressed regret over perceived healing limitations, referencing her inability to fully heal Takami Karibuchi, though Hikari reassured her about Takami's rescue. Later, she assisted Sadako in destroying the Neuroi using improvised tactics. She also participated in squadron life events like the Saturnus Festival preparations.

Trivia notes include her nickname "Jose" among friends and her familiar being a Persian cat. Activating her magic causes cat-like ears and a tail to manifest. She shares her name and inspiration with historical French ace pilot Georges Lemare. Her later Striker Units were based on the French Arsenal VG-33 and VG-39 aircraft designs, and she was typically armed with a Bren light machine gun or a Degtyaryov machine gun.