 In 1921 Jatindra Mohan joined the Indian freedom struggle and was Mahatma Gandhi's right-hand man in Bengal apart from being the Mayor of Calcutta for three terms and the head of the Legislative Assembly.Nellie joined her husband in participating in the Non-Cooperation Movement of 1921.After his imprisonment during the Assam-Bengal Railwaymen's strike, she forcefully protested against the District authorities imposition of a ban on assembly, addressed mass meetings and courted arrest.