She began with sport jujitsu at age of 9 in hometown Hillerød. She started training in ju-jitsu by following her brother Bjørn who was also practicing it.[3] Her father is from Faroe Islands.[4]
She has been member of Danish sport jujitsu team since 2013. In 2017 she won gold medal at World Games in Wrocław, discipline Fighting System.[5] She struggled in training the first few years, often considering leaving the sport, but persevered and won her first tournament.[3] She is an alumni representative at the European Youth Olympic Festival.[3]
Since making her competitive sports debut in the adults category in 2015, she has won a medal in every Ju-Jitsu World Championship at 57kg.[2] During the COVID-19 pandemic in Denmark, during lockdown, Dahl was allowed to continue to train Ju-Jitsu as she was considered as one of Denmark's elite athletes.[6] She won a gold medal in Ju-Jitsu at the 2017 World Games in Poland.[7] In 2023, Dahl broke her foot and was a doubt for the World Championship. After seven weeks in a cast and being medically cleared to fight the Saturday before the championships, she won a silver medal.[2] In 2024, Dahl won a gold medal at the Ju-Jitsu European Championship in Gelsenkirchen, Germany.[8]
