 Wester played for the first time with the Dutch team in a friendly match against Romania on 2 October 2012.She played in the 2015 World Women's Handball Championship with the Dutch team, achieving the final of the tournament, but losing against Norway 23–31.She was called up for represent Netherlands handball team in the 2016 Summer Olympics, achieving the fourth place after losing in the semi-finals against France 23–24, and in the bronze medal match against Norway 26–36.