Flora and her older sister, Benoîte Groult (1920-2016) were raised in the Parisian upper class.
The sisters collaborated by combining excerpts from their personal journals written many years earlier at the request of their mother.
She and her sister decided to co-author two other highly successful books - Le Féminin Pluriel (1965) and Il était deux fois (1968).
They also collaborated on a children's book, Histoire de Fidèle (1976), where Benoîte Groult wrote the text and Flora created the illustrations.
[1] Flora published various other books without her sister including: Maxime ou la Déchirure (1972) and Le Passé Infini (1984), Tout le plaisir des jours est dans leurs matinées (1957), Le temps s'en va, madame (1986), Marie Laurencin (1987),[3] Ni tout à fait la même, ni tout à fait une autre (1993) and Un seul ennemi, les jours raccourcissent (1993).