Crammer has been active with the women's section of the national team. She has earned caps with the women's under-17, under-18, and under-19 teams. With the under-17 team, she participated in both the 2008 UEFA Women's Under-17 Championship and the inaugural 2008 FIFA U-17 Women's World Cup, where France were eliminated in the group stage. In the final group stage match against Paraguay, Crammer became the first woman to score a hat trick in the tournament's history. With the under-19s, Crammer played in the 2009 UEFA Women's Under-19 Championship where France reached the semi-finals before bowing out to Sweden in extra time.