A. Köhler & Co.[1] Before she married, she was determined to be a painter and took drawing and painting lessons from Bernhard Hanssen, Kitty Kielland and Johan Jacob Bennetter [no; sv; fr].

In 1873, she married merchant Hans Wilhelm Severin Hansen (1842–1920), the brother of painter Carl Sundt-Hansen.

When the introductory course was given, Hansen acquired a warp-weighted loom, and she quickly began to create her own images.

In May 1892 Hansen moved to Oslo and founded Atelier for national Tæppevæving, complete with a dyeing workshop.

At the 1900 World's Fair in Paris, Hansen was awarded the gold medal for her tapestry Melkeveien ('The Milky Way').

The carpet was already purchased for the Museum für Kunst und Gewerbe Hamburg.

Experimental techniques led to a special transparent weave, which Hansen patented.

In 1915 Hansen received the King's Medal of Merit in gold for her work as a textile artist.

From 1926 until her death in 1931, Hansen worked on the St. Olav wall tapestry in Stavanger Cathedral.

She was strongly influenced by the theory of English textile designer William Morris.

Often a workshop consisted of people with different tasks: one person who dyed yarn and arranged the card, and the weaver who transferred to the loom.