She falls in love with her cousin, , 's illegitimate son.
New York City: Retrieved 16 April 2018.
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It has been suggested that the situation further damaged Francis Ford Coppola's career and ruined Sofia's before it had even begun.
After shooting, she confirmed that she did not want to go into acting.
Michael is devastated by Mary's death, and screams in torment while cradling her dead body.
It has also been suggested that Sofia's role in the film may have contributed to its box office performance, which started strongly and then went into decline.
Sofia had herself worried that she had only been given the role because she was the director's daughter, and the role placed a strain on her during the time of shooting that her mother observed in a series of diaries she wrote for during the filming.