Dahlmeier's 2018–19 season was disrupted by illness, however she took a World Cup race win at Antholz in January 2019 before going on to take two bronzes at the 2019 World Championships in Östersund in the sprint and the pursuit. After the end of the season, in May 2019 she announced her retirement from competition, stating that she no longer feels the 100% passion necessary for professional biathlon.