Fanger's novel was made into the 2004 Benoît Jacquot film À tout de suite (English translation of title: Right Away).
She met Sid Mohamed Badaoui ("Bada") at a bar on Paris's Champs Élysées in December 1974.
Two months later, in February 1975, he called her explaining that he was on the run after a bank-robbery on Paris's Avenue de la République failed to go as planned, and resulted in a ten-hour hostage standoff that left a bank cashier and one of the robbers dead.
Upon returning to France, she faced criminal charges of aiding the fugitives, and was defended by Robert Badinter.
She published her autobiography J'avais dix-huit ans (I was 18) in 2004, and the book was made into the 2004 Benoît Jacquot film À Tout de Suite, starring Isild Le Besco as Lili.