At the age of 18 she joined C.S. Aeronautica Militare, the sport section of the Italian Air Force, and moved to Paris to be coached by Daniel Levavasseur, who was training Laura Flessel at the time. The 2008–09 season saw her climb her first World Cup podium with a bronze medal in the Doha Grand Prix. It was followed by bronzes in Tauberbischofsheim and Budapest, silver in the Montreal World Cup and gold in the Lobnya World Cup. In the 2009 World Championships in Antalya she was stopped in the round of 32, but in the team event she conquered Italy's first gold in women's épée along with Bianca Del Carretto, Francesca Quondamcarlo and Cristiana Cascioli. Moellhausen finished the season No.8 in world rankings, her personal best as of 2014.