In 2013, Defrance teamed up with Camille Lecointre, after Lecointre's Olympic partner Mathilde Géron returned to studying after the Games. The pair won the 2013 French National Championships, and came second at the 2013–14 ISAF Sailing World Cup events in Miami and Palma de Mallorca. Defrance and Lecointre were winning the Mallorca event until the last race, when they were overtaken by New Zealand's Jo Aleh and Polly Powrie. Defrance and Lecointre won a bronze medal at the 2015 470 World Championships, and a silver medal at that year's 470 European Championships. The pair won the 2016 470 World Championships event in Argentina. In March 2016, Defrance and Lecointre were selected for the women's 470 event at the 2016 Summer Olympics; it was Defrance's first Olympic Games. At the Games, they finished third, winning the bronze medal. They were one point ahead of the fourth-placed team, the Dutch pair of Afrodite Zegers and Anneloes van Veen. In the final race of the competition, they came from the back of the fleet up to sixth place, which secured their bronze medal.