Bertrup began her international curling career as the alternate player for Elisabet Gustafson. With Gustafson, she won a gold medal at the 2000 European Curling Championships, and placed 6th at the 2002 Winter Olympics.
Gustafson retired after the Olympics, and Bertrup was without a team. She wouldn't return to the international curling scene until being picked up by Stina Viktorsson in 2010. Bertrup played third for the team, and they won a gold medal at the 2010 European Curling Championships. Viktorsson left the team in 2011, and was replaced at the fourth position by Maria Prytz. The teams's lead, Sigfridsson assumed skipping duties. They won a silver medal at the 2011 European Curling Championships, and the rink was chosen to represent Sweden at the 2012 Ford World Women's Curling Championship.