In 2008, Berder was selected as reserve for the Beijing Olympics. The same year, she took her first national senior title. In the 2009 World Championships at Antalya, she climbed her first international podium with a team silver medal after France was defeated in the final by Ukraine. The next season, Berder climbed her first podium in the World Cup with a bronze medal in the Orleans Grand Prix, hosted by her own club. France was defeated again by Ukraine in the 2010 World Championships at home in Paris, this time in the semi-finals. In the small final, they overcame the United States, weakened by the injury withdrawal of Olympic champion Mariel Zagunis, to earn the bronze medal. In 2011, Berder made her way to the final of the Orléans Grand Prix, where she was defeated by Zagunis.