Wåhlin played in the World Junior Curling Championships in 2014, 2015, 2017 and 2018 as a member of Team Isabella Wranå.

In 2014, her team of Wranå, Elin Lövstrand, Almida de Val and Fanny Sjöberg had a fourth-place finish, after they lost in the bronze medal game to Russia.

She was back at the event in 2017 where her team won the gold medal, defeating Scotland's Sophie Jackson in the final, and lost just two round robin games in the process.

The next year the same team went undefeated in the round robin, but ended up losing to Canada's Kaitlyn Jones in the final.

The team won their first World Curling Tour event at the 2018 AMJ Campbell Shorty Jenkins Classic.

[15] In their first event of the 2021–22 season, Team Wranå reached the final of the 2021 Euro Super Series where they lost to Rebecca Morrison.

[18] Elsewhere on tour, the team reached the semifinals of both the Red Deer Curling Classic and the International Bernese Ladies Cup.

At the Swedish Eliteserien in February, the team defeated Tova Sundberg to claim the event title.

She returned briefly in 2023 as Team Wranå's alternate when they represented Sweden at the 2023 European Curling Championships.

[25] Wåhlin returned to the mixed championship seven years later in 2023 with a new team of Johan Nygren, Fredrik Carlsén and longtime teammate Fanny Sjöberg.