Bouché edited six films for French New Wave filmmaker François Truffaut, starting with the 1960 releases Shoot the Piano Player and The Army Game.
Bouché and Truffaut again collaborated on the acclaimed, influential Jules and Jim and the short Antoine and Colette (part of the omnibus project Love at Twenty), both released in 1962.
She edited several more films in the 1970s and served as editorial associate on George Roy Hill's 1979 romantic comedy A Little Romance.
She also did uncredited work on Peter Sellers' final film, the 1980 comedy The Fiendish Plot of Dr. Fu Manchu and co-edited Paul Morrissey's 1985 drama Beethoven's Nephew.
More recently, Bouché was recruited by François Ozon to help edit his films Criminal Lovers (1999) and Water Drops on Burning Rocks (2000).