She was a member of the Swedish national team, playing the 1999 and 2003 World Cups and the 2000 and 2004 Summer Olympics. She made her senior debut against Norway in February 1997 after 17 caps at Under–21 level. Fagerström also competed for Sweden at the 2001 European Championship, scoring the winning goal against Russia on the final day of group play to send her team on to the Semi-Finals.