Sudipta Basu Thakur, the 5th daughter of Debkumar Basu Thakur of Nayabari, was born in 1951. She passed BSc and MSc in Physics from Jadavpur University in first class. she did her PhD from Calcutta University in 1977. Everyone hoped that she would become a college professor. After a short stay at the Bosu Bigyan Mondir, Sudipta disappointed everyone and withdrew from family and worldly relations. She joined the Ramakrishna Sarada Mission in 1979. In the life of a nun she is well known as Prabrajika Ashesprana.