She made her debut for the senior
Finland team on 31 May 2007, playing 17 minutes against
Norway. Sällström missed the entire 2012 season with an
anterior cruciate ligament injury. She re-injured the knee in March 2013 and was ruled out of contention for a place in Finland's
UEFA Women's Euro 2013 squad. On 25 January 2014 Sällstrom injured her
anterior cruciate ligament (ACL) again, making it likely she would miss the 2014 season. In total Sällström has endured three ACL injuries in her career. Coming back from injury to finish as second highest goalscorer in the 2017–18 Damallsvenskan season. ==International career==