After teaching English in Japan, Sen returned to the United States to became the editor of Asia magazine. In 1920 she undertook a round-the-world expedition which included stunt flying and caving. Eventually she settled in a village in northeastern India, participated in rural life, married Indian native Basiswar Sen on November 1, 1932, and came to love the culture of her adopted country. Her attachment is reflected in her books Voiceless India (1944) and Pageant of India's History (1948). Although not born in India herself, she strongly disapproved on the involvement of non-Indians in subcontinental matters. Sen died in 1982, aged 89.