Brataas was born in Kristiania (now Oslo), the daughter of Svend Marus Karlsen (1882–?)
[2] She made her film debut in 1942 in Toralf Sandø's film Det æ'kke te å tru, followed by Vi gifter oss (1951), Trine!
(1952), and Balladen om mestertyven Ole Høiland (1970).
She also performed at the People's Theater in Oslo.
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