Begum Mujib was a witness from the closest to the many events the Father of the Nation vent through in his striving for a sovereign md free Bangladesh. (She was as a constant source of strength to him, what came in the relisation that for most of his political career Bangobondhu Sheikh Mujibur Rahman was in incarceration at the hands of successive Pakistain regimes). Begum Mujib's task, apart from helping Bangobondhu maintain his struggle against the political domination of what was then West Pakistan, was to act as the base upon which her family operated. The children, all of them young required her presence at every stage. During the War of Liberation in 1971, with the country at war and Bangobondhu in Pakistani prison, Begum Mujib never lost faith in destiny, her family's as well as the country's. Begum Fazilatunnessa Mujib was endowed with rare qualities of head and heart, indomitable spirit and undaunted courage. She was a great source of inspiration for Bangobondhu Sheikh Mujibur Rahman.
She was assassinated in the pre-dawn hours of August 15, 1975, moments after Bangabandu fell to the foul conspiracy of men determined to take Bangladesh away from its part of democracy and secularism.