The tragedy, which left Daria in need of lifelong institutionalization, had a profound effect on Tierney’s mental health. (The couple's second child was also a daughter, named Christina.)

After divorcing Cassini in 1952, Tierney became enamored of Prince Ali Khan, European jet-set playboy who was a former husband of Rita Hayworth. His father, the Aga Khan, strongly objected to him marrying another Hollywood actress and the relationship was soon in trouble.

A combination of guilt about her daughter’s devastating condition and then losing Ali resulted in Gene having a nervous breakdown. She was hospitalized at times for depression, and her career suffered.

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