After World War I, she returned to Lithuania with her parents, attended Rokiškis Gymnasium, began studying at Vytautas Magnus University in Kaunas, graduated from Klaipėda Pedagogical Institute in 1937, and worked as a teacher. She continued her studies in literature at the Vilnius University of Applied Sciences and graduated in 1943. He collaborated in the magazines "Naujoji vaidilutė", "Naujoji Romuva". In 1944 he had to leave Lithuania. She studied briefly at the University of Vienna, published her first books of poems and novellas while living in Germany, and moved to the USA in 1948, living in Santa Monica.
Since 1992, she has been a member of the LRS.
Most of her work in exile consists of novels, short stories, novellas, 4 collections of poetry written at different times, stage works and travel impressions. Of her more than twenty books, the writer herself singles out the prize-winning novels Short Day (1955), The Road to the Left (1964) and First Outside the World (1984). The prose combines realistic and lyrical flow, intimate depiction of the family and panoramic views, psychologised and uplifting narration. The prevailing images are of the Lithuanian countryside between the wars (mostly Eastern Aukštaitija), of intellectuals spreading light, nostalgic feelings of Lithuanians in exodus, and reflections on their lives. Faith, love, the meaning of work and customs are the constant underpinnings of the plots and the fates depicted, and idealistic patriotic aspirations are the enduring ambition of her work and activity. Alė Rūta has been a diligent reviewer and organiser for many diaspora press publications and cultural gatherings.