Asuna's mother works as a nurse, frequently pulling long night shifts that leave her daughter unsupervised. Her demanding schedule stems from widowhood—her husband died when Asuna was very young—forcing her to balance single parenthood with her healthcare career. This directly fosters Asuna's independence and solitary habits, including time spent alone in a mountain hideout.
She returns home on July 14 and informs Asuna about a deceased boy found in the river, though Asuna refuses to believe it is Shun. Their interactions remain functional, centered on practical updates rather than emotional discussions about their shared loss. Her role consistently contextualizes Asuna's home life and motivations without exploring her personal experiences beyond these parental duties.