On August 29, 1978 shortly before the 1979 Islamic Revolution, Hayedeh emigrated to the United Kingdom. She stayed there for three years and moved to the USA in 1982 to continue her career and live close to her sister Mahasti.
Hayedeh lived in Los Angeles from 1982 until the end of her life. The growth of the Persian community in Southern California due to the increasing number of people leaving Iran after the revolution bolstered Hayedeh's career in the 1980s.
Hayedeh's songwriters in the USA were mostly Farid Zoland, Sadegh Nojouki, Mohammad Heydari and Andranik. Lyricists she worked with were Ardalan Sarfaraz', Homa Mir-Afshar, Iraj Razmjou but the lyricist who wrote most of Hayedeh's songs and hits was her best friend Leila Kasra (a.k.a. Hadieh). She was featured in two of her albums reading her songs. Kasra died in 1989 a few months prior to Hayedeh's death, after a long struggle with breast cancer.
During the 1980s Hayedeh played in sold-out venues in the United States, Canada, Europe, and other places in the world such as Royal Albert Hall in London.
Hayedeh also regularly appeared on the Los Angeles-based Persian TV channels such as Jaam-E-Jam TV, IR TV and Jonbesh TV.[1] In some of her TV programs Hayedeh criticized Iran's fundamental regime and was a supporter of the Persian monarchy of Mohammad Reza Shah.

