This  booklet by Dr. Hironmoy N. Mukherjee  explores the unique and often misunderstood bond between Swami Vivekananda and his disciple, Sister Nivedita. The author aims to shed light on their "enigmatic" connection, specifically focusing on the expectations Vivekananda had for Nivedita regarding her mission and work in India. This publication is an edited version of an original article titled "Swami Vivekananda and His Spiritual Daughter Sister Nivedita," which first appeared in the February 2015 issue of the Bulletin of the Ramakrishna Mission Institute of Culture.