Leßmeister started playing darts in 2004, at the age of 17, in Rhineland-Palatinate, where she won every local championship title from 2005 to 2009.

In 2008, she also represented Germany during the 2008 WDF Europe Cup, where she lost in the singles competition to eventual bronze medalist Janni Larsen.

This result guaranteed her start in the 2009 World Masters, where she lost to Francis Hoenselaar by 0–4 in legs in the third round match.

In 2022, after advancing to the finals of the DDV German Masters, she returned to international competition in the World Darts Federation tournaments.

[4] At the 2022 Dutch Open, she was eliminated in the fourth round against Maria O'Brien by 3–4 in legs.