Initially using an alias, Louise concealed a past as a member of the Andro Band, an outlaw group led by Braiking Boss. She abandoned that life, seeking refuge in the frontier town of Three Hawks. There, she forged a bond with Sheriff Gō Mifune, nurturing his dream to become a racer while carefully hiding her fugitive history to protect the town.

Louise wields throwing knives with skill, employing them defensively, such as when she rescued Akubi from a poisonous snake threat. Her hidden past surfaces violently when Andro Band members arrive in Three Hawks hunting for her, shattering the town's peace. The confrontation intensifies as Braiking Boss captures Akubi, using the hostage to draw Louise out.

Facing grave personal risk and the potential ruin of her new life, Louise chooses to confront Braiking Boss directly to free Akubi. This act demonstrates her commitment to protecting others and her definitive break from her outlaw identity. Following Braiking Boss's defeat and the Andro Band's capture, Louise stays in Three Hawks. Her courage directly influences Gō’s choice to pursue his racing dream.