Luik made her debut for the Australian national team in February 2010 in a friendly match against New Zealand. A year later she was part of the squad for the 2010 AFC Women's Asian Cup, which Australia won. In the summer of 2021, she was part of Australia's squad for the delayed 2020 Olympics and made three appearances during the tournament. Shortly after the Olympic Games, in August 2021, she announced her retirement from the national team, having made over 30 appearances.