Sigfridsson would later join the Stina Viktorsson rink, at first playing second, and then becoming lead in 2007. Sigfridsson would return to the Worlds as a member of the Viktorsson rink at the World Championships in 2008, finishing in sixth place. The team would win their first World Curling Tour event the next season, winning the 2008 Stockholm Ladies Cup. Later in the season, Sigfridsson temporarily joined the Anette Norberg rink as lead, and the team won a silver medal at the 2009 Mount Titlis World Women's Curling Championship, losing to China's Wang Bingyu in the final. Sigfridsson won a gold medal at the 2010 European Curling Championships with Viktorsson. In 2010-11, the Viktorsson rink would play in their first two Grand Slam events. They played in the 2010 Manitoba Lotteries Women's Curling Classic, winning 4 games before being eliminated, and at the 2011 Players' Championship, winning just two games.