After juniors, Wennerström would continue to play with Viktorsson when they participated in the 2007 Winter Universiade, playing third on the team. The rink finished in 4th place. The following year, Wennerström was moved back to second on Viktorsson's rink when they played at the 2008 Ford World Women's Curling Championship. The team finished in 6th place at the event. The following year, they played in the 2009 Winter Universiade with Wennerström throwing third rocks again. They would finish 6th. The team would find their most success the following year, when they won the gold medal at the 2010 European Curling Championships, defeating Scotland's Eve Muirhead in the final. Wennerström played second on that team.