Gebet took up fencing at the age of six at her local club in Beynes. She earned a bronze medal at the 2004 Junior World Championships in Plovdiv. In 2010, she was selected into the French national senior team that ranked 5th in the European Championships and the World Championships. The 2013–14 season saw her win a bronze medal both in the European Championships and the World Championships. The next season she climb her first individual World Cup podium with a bronze medal in Cancún.