In 1938, while a student at Punjab University, at a session of the All-India Inter-University Debate, she was announced as the best speaker after she spoke against the proposal that India should not contribute to future wars.

That debate won her the gold medal and Punjab University the Sir Ashutosh Mukherjee trophy.

"[10] In the same year, at a session of the All-India Inter-University Debate, organised by the Calcutta University Law College union, she was announced as the best speaker after she spoke against the proposal "That India should be no party to future wars.

"[3] That debate won her the gold medal, and resulted in the Sir Ashutosh Mukherjee trophy going to Punjab University.

[14][15] Along with Chief Officer Margaret I. Cooper and second officer Phyllis Cunningham, their purpose was to carry out a two month study of training and administration in the Women's Royal Naval Service (WRNS), by visiting WRNS establishments across Britain.

[15] Sen made broadcasts from the BBC in English and Bengali, and attended a ceremony at Buckingham Palace.

[15] During her course in political science in 1939, she married Captain (later Lieutenant-General) Lionel Protip Sen of the Baluch Regiment.