She studied at the Nykarleby Seminarium during 1925-1926, where she qualified as a primary school teacher.
She wrote poetry, children"s novels, short stories, plays, and television and radio dramas. She was the youngest of eight children. She worked as a freelance journalist for the Swedish-language newspaper Borgåbladet.
She worked as a schoolteacher at Laguska Skolan, a private girls" school in Helsinki, from 1937 until 1972.
She had two daughters, Ursula and Barbara. von Schoultz made her writing debut in 1932 with the children"s book Petra och silverapan. She was best known, however, for her poetry.
She published 15 collections of poems between 1940 and 1996. Her first collection of poems, published in 1940, was titled Minister timme, and her final collection, published in 1996, was titled Molnskuggan.
The themes addressed in her poetry include existential issues, womanhood and motherhood.
She also wrote numerous short stories, dealing mainly with love and relationships, which were published in anthologies including Ingenting ovanligt (1947), Den blomstertid (1958) and Kolteckning ofullbordad (1983). She also wrote fifteen radio plays, four television dramas, three theatrical plays and one novel. She published her memoirs, titled Längs vattenbrynet, in 1996, the same year that she died.