Education
At the 2004 World Junior Curling Championships, the team finished 6th and at the 2004 Ford World Women"s Curling Championship they finished in 8th. They finished in 8th place at the 2004 European Curling Championships. She then played second on the team at the 2005 World Junior Curling Championships, where the rink finished 4th.
At the 2005 World Women"s Curling Championship, the rink finished in 10th.
Career
She is the skip of the 2014 Danish Olympic Curling Team. Nielsen played in her first international events in 2004, as an alternate for the Madeleine Dupont rink. Even though she was an alternate, she played many games.
The following season, Nielsen moved to play second for Dorthe Holm"s rink.
Also that season, Nielsen skipped the Danish team to a bronze medal finish at the 2006 World Junior Curling Championships. At this point, Nielsen left the main Danish team to form her own rink.
At the 2007 European Curling Championships, she skipped Denmark to a bronze medal. At the 2010 European Curling Championships, she skipped Denmark to a 5th-place finish.
She and her team finished in fourth place after a close loss in the bronze medal game to Wang Bingyu.
She had another successful Euros when her Danish team finished 4th at the 2011 European Curling Championships. She returned to the world championships in 2012 in Lethbridge, Alberta, but failed to reach the playoffs, finishing with a 5–6 record. The following season, Nielsen"s Danish rink once again finished 4th at the 2012 European Curling Championships.
Her team made the World Championships again, but finished with a worse result, a 4–7 record.
She skipped Denmark at the 2013 European Curling Championships, where they finished in 4th place for the third time in her career. Nielsen skipped the Danish women"s team at the 2014 Winter Olympics, where she was also the flag bearer for Denmark in the opening ceremonies.
At the games, she led the team to a 6th-place finish with a 4-5 record. Nielsen is employed as an insurance underwriter.
Grand Slam record.