For the national team Simon played since 2007 in the age groups U-15 to U-20. With latter, she participated in the 2012 FIFA U-20 Women's World Cup, where the team conceded only one goal; in 0: 1 lost final against the selection of USA. Previously, Simon won in 2008 and 2009 the UEFA Women's Under-17 Championship. She also won in 2011 the UEFA Women's Under-19 Championship.