The Dutch struggled to qualify for the 2019 Women’s World Cup, when a draw against Ireland and a loss against Norway placed them second in their qualification group and forced them to enter qualification playoffs. Martens did not feature in the semifinal tie of the playoffs due to a foot injury, and the Dutch won 4–1 on aggregate against Denmark. A month later, Martens returned to the squad and scored in a 3–0 win over Switzerland in the first leg of the playoff final. The Dutch successfully qualified for the World Cup after defeating Switzerland 4–1 on aggregate over the 2 legs of the playoff final.