She spent her youth both in the city, and at the nearby farm Alme in Norderhov which belonged to the maternal branch of the family.
She started a voluntary school kitchen education at Kampen School for both boys and girls, and studied German literature on domestic science (Marie Clima's 1889 book Haushaltungskunde) and also travelled to Germany.
[1] Together with Dorothea Christensen and Henriette Schønberg Erken, Helgesen has been credited with forming the "first wave" of domestic science pioneers in Norway.
[1] At the same time, the Norwegian State College for Domestic Science Teachers was established at Ringstabekk (in 1909).
A new book with Dorothea Christensen followed in 1911, Husstel for fortsættelsesskoler, realskoler, ungdomsskoler, lærerskoler og skolekjøkkenkurser for voksne.