She wrote about rumours surrounding celebrities and stars in column "Les Potins de la commère" ("neighbourhood busybody") that was widely read in France, reputedly by both ministers and concierges.

From these revelations she published several books, including the collections of her mémoires, the Bibliothèque Rosse, Histoires de Marie-Chantal[3] and La Commère en dit plus.

Olivia de Havilland remarked that her "power and prestige as a lady journalist [were] unequalled in all of Europe"[4] In 1956, when Romain Gary won the Prix Goncourt for Les Racines du ciel, columnist Tessier suggested that because the writer was from Lithuania, he thus had a poor command of French, so Albert Camus and Jacques Lemarchand [fr] must have written his book for him.

[7] Retirement brought the opportunity to write her books, but she missed her accustomed crowded life of invitations and phone calls, and suffered severe depression.

She died by suicide in 1980, jumping from the balcony of the 9th floor of a seniors' residence in Neuilly-sur-Seine, west of Paris, where she lived with her husband.