Catholic returned to the faith of her childhood at the age of 40, she admires medieval society which she studied extensively and depicts she in the framework of her novels.

In 1963, her book Le bonheur est une femme: roman and this was a historic fiction about the relationship between Pierre de Ronsard (Prince of Poets) and Cassandra Salviati.

[1] Her sentimental and idealized vision of the Middle Ages, still close to the one of Régine Pernoud, earned her criticism from academics such as the medievalist Robert Fossier.

She rediscovers, following Régine Pernoud, the important place given to women at that time, and especially from the eleventh to the thirteenth century.

By thus going against many preconceived ideas about the Middle Ages, she honours these centuries which she qualified in her autobiographical story The Smile of the Angel (Le sourire de l'ange) as "courteous, luminous and creative".