Py Sörman was the daughter of a clergyman and made her debut with her contemporary novel Han, 1921, which like the earlier part of her extensive work Adams revben, 1929, describes the conflict between love and artistic creativity. Her novel Aloë, which was awarded a prize in the Nordic novel competition in 1931, is a powerful cultural critique.
She also wrote short stories and poems. In the 1940s, she published the idyllic two-volume family chronicle about the girl Liselott 1944-1945. After having converted to Catholicism, she wrote a biography of Queen Kristina in 1942, which preceded a number of modern novels about saints.