Ballisager started playing football at six years old. She played youth soccer for Vellev IF, and then for Team Viborg. In 2012, she signed with IK Skovbakken.[2]
Vålerenga, 2018–2023
Ballisager signed with Vålerenga before the 2018 Toppserien, and the club named her captain in the 2021 season. She made 140 total appearances for the club across all competitions.[3]
Kansas City Current, 2023–
On 3 July 2023, American club Kansas City Current of the NWSL announced that it had signed Ballisager through the 2024 season, with an option for an additional year, and that she would join the team following the 2023 FIFA Women's World Cup. With six months remaining on her contract, Vålerenga transferred her for an undisclosed fee but stated that it was the largest in club history.[3]
International career
Ballisager played for several youth Danish national teams. In 2012, she debuted for the senior national team in a match against Brazil.[4] She was also part of the team which represented Denmark at the UEFA Women's Euro 2017,[5] where they reached the competition final for the first time in history, but eventually lost to the Netherlands.[6]
^Ballisager Pedersen, Stine (22 May 2017). "Fodboldspiller Stine Ballisager Pedersen har Girlpower" [Soccer player Stine Ballisager Pedersen has Girlpower]. Kvindesport.dk (Interview) (in Danish). Interviewed by Peter Arndal. Archived from the original on 28 July 2017. Retrieved 25 August 2017.