It happened in 1939 when Paris was under the occupation of the German army. Madame de Florian was then 23 years old and decided to leave her apartment near the Opera Garnier, as did several thousand other Parisians, to move to the south of France. It was the beginning of World War II and he wanted to move away from the conflict zone.
After the end of the war, Madame de Florian never returned to that apartment but continued to pay all the costs until the end of her life. No one has stepped into the 9th District apartment for seven decades.