Falk then moved to promoted team Mallbackens IF, for whom in the 2015 season she played all 22 games and helped narrowly escape relegation as third from bottom.

In qualifying for the group phase of the 2022–23 Champions League, she competed in the second round, but her team lost twice to Paris Saint-Germain.

For the 2019 World Cup she was nominated as the only Swedish player without international caps.

During qualifications for the Euro 2022 when regular goalkeeper Hedvig Lindahl was injured, Falk was used in the last four qualifying games and kept four clean sheets.

With a 2-0 win against Iceland in the penultimate game, the Swedes qualified early for the European Championship finals.

[11] She played in the third group game against New Zealand when some regular players were rested after the two opening victories.

In the qualifications for the 2023 World Cup she played in goal three times and qualified with her team for the finals in Australia and New Zealand.