On 26th of August 1961, Grace got married to Gerald "Jerry" Slick. Gerald is a cinematographer. However, this love life lasted no more than half a decade. They got divorced in 1971.
It seems like Grace's extra marital affairs was the main reason that dissolved her first married life. When she was bonded in married life with Jerry, she began dating Paul Kantner. Paul Kantner is a rock musician. She also gave birth to her only child from this romantic relationship. She welcomed her only child, China Kantner in 1971. They dated each other till 1975.
In the mid 1976, Grace was spotted with Skip Johnson. Skip Johnson is a Jefferson Starship lighting designer. After being in love for few months, they finally got married on 29th of November 1976. This relation lasted more than her previous relationship but not forever. They got divorced in 1994.
Grace received her elementary education from Palo Alto Senior High School. Then she got transferred to Castilleja High School. She graduated from there and then she got enrolled at Finch College in 1957 but she switched to University of Miami in 1958. After switching to San Francisco, she began her modeling career and she worked at I. Magnin department store as a model for about three years. It was from that time she began her interest in music. In 1965, she heard some accolades of the newly formed musical band, Jefferson Airplane but till that time she didn't have any desire to perform professionally. Later, she became associated with Jerry Slick, Darby Slick and David Miner and together they formed the musical band The Great Society. They began recording their debut album, Conspicuous Only in Its Absence in 1966 and it was finally released in 1968. She also played for Jefferson Airplane and Jefferson Starship. She has released more than a dozen of albums. Her net worth is said to be around $20 million.