Roujas made 51 appearances for France between 1995 and 2001, and competed at UEFA Women's Euro 1997 and UEFA Women's Euro 2001. In a Euro 1997 match against Russia, Roujas scored a hat-trick as France won 3–0. She also scored in a 1–1 draw against Spain. Roujas was joint top scorer at the tournament, alongside Italy's Carolina Morace and Norway's Marianne Pettersen. She retired after Euro 2001 for personal reasons.