Coming to power in the year 1966 after the brief ministry of Lal Bahadur Shastri, Indira Gandhi proved strong enough in her own right for people to stop describing her as Nehru's daughter or as  not related to Mahatma Gandhi.  
Indira Gandhi came into power in the year 1966.
Indira Gandhi, unrelated to Nehru, failed to come into power after Lal Bahadur Shastri.