Mama anchors the central family unit, married to a husband whose demanding work often imposes last-minute weekend obligations. These cancellations, particularly of planned beach trips, repeatedly disappoint their daughter Mika and create household tension. Mama manages the home and cares for Mika during these frequent absences, bearing the weight of both practical household duties and the emotional fallout from her husband's schedule. She also navigates the complications arising from his significant fear of the ocean, which further restricts family activities. Her presence embodies the sacrifices made to preserve family stability amidst these persistent pressures.

Actively involved in daily family life, Mama exists within Mika's imaginative reality during play with the inflatable dugong Juju, fulfilling her general caregiving role. She is integral to the family's efforts to navigate disappointment and sustain bonds despite recurring obstacles. Her background, extended family, and life outside her immediate household role remain undefined.

Throughout the narrative, Mama's character remains consistent; she undergoes no significant development or change. She persists as the supportive maternal figure, adapting to circumstances largely defined by her husband's limitations. Her appearance is described only within the general familial context. Mama's primary narrative function is to illustrate the familial impact of work-life imbalance and parental fears. Her interactions consistently demonstrate her supportive, stabilizing presence within the household dynamic. Her depiction remains confined to this specific narrative role.