Darabi was born in 1940 in Tehran. Following the end of high school, she entered Medical School of University of Tehran in 1959. In 1960, she was detained for an organizing a student demonstration in favor of the National Front. She married her classmate Manoochehr Keyhani in 1963. After completing her studies, she practiced in the village Bahmanieh, located in northern Iran. Darabi went to the United States to continue her studies, and obtained a pediatrics specialist degree in psychology.