[3] Playing for the Norwegian national team, Kristiansen won gold medal at the 2014 European Women's Handball Championship.

She won gold medal with Norway at the 2015 World Women's Handball Championship, defeating Netherlands in the final.

[4] At the 2016 European Women's Handball Championship in Sweden she won a gold medal with the Norwegian team.

She also played at the 2017 World Women's Handball Championship in Germany, when Norway won the silver medals.

On 12 January 2023 it was announced that she is expecting her first child with her partner, Hungarian Ádám Devecseri, former canoeist and later the physiotherapist of Győri ETO KC.