In early September 2010, seventeen-year-old Aedo represented Chile at the FIFA U-17 Women's World Cup. Later that month, she was named in Chile's 20-player senior squad for the 2010 South American Women's Football Championship in Ecuador. She scored the opening goal in Chile's 3–1 win over Peru. Aedo scored three goals at the 2018 Copa América Femenina, where Chile qualified to a FIFA Women's World Cup for the first time in its history.