Her best World Cup finish was first place in a sprint event in Liberec, in the Czech Republic, on 12 January 2013.

Malvalehto's best finish at the FIS Nordic World Ski Championships was seventh in the sprint event at Oberstdorf in 2005.

[1] She announced her retirement from cross-country skiing after not being selected for the 2018 Winter Olympics.

[3] She was a friend of Swedish cross-country skier Charlotte Kalla.

[4] Nousiainen died of stomach cancer on 29 July 2019 at the age of 36.