 Her half-sister, Lou Doillon, was born in 1982 as a result of the union.Gainsbourg would go on to work with her stepfather in the film "The Temptation of Isabelle" in 1985 and later in "Amoureuse" in 1992, which also starred her future partner Yvan Attal.In 1987, she was the target of a bungled kidnapping.