Wennerström left the Viktorsson rink in 2011 to play with Sigfridsson as her second. The team would find immediate success, winning the silver medal at the 2011 European Curling Championships, after losing the final to Scotland's Muirhead. The team continued their success that season by winning a silver medal at the 2012 Ford World Women's Curling Championship, losing to Switzerland's Mirjam Ott in the final. They had another successful Euro Championship, when they won the bronze medal at the 2012 European Curling Championships and a silver medal at the 2013 World Women's Curling Championship.