After the death of her mother and elder sister, Berta persuaded her father to allow her to attend the high school in Sigtuna where her subjects included art, literature and philosophy.
[2] In the early 1940s, while in Fredrika the writer and artist Elsa Björkman-Goldschmidt discovered Hansson's paintings and arranged a solo exhibition for her in Stockholm in 1943.
In 1953, she spent a year in a Swedish mission station in South Africa where she developed an art programme for schools in KwaZulu-Natal.
Particularly concerned about the conditions for the black population, she depicted her feelings in her art, including in textiles, her growing interest.
Not only did she produce large textile works for public display but in the 1970s began to sculpt children's portraits in terracotta and bronze.