Questions About French Sephardi History

Does anyone know how people with Jewish heritage survived in the Southern French countryside during WWII?

The more I researched the more I’m learning that my Jewish roots are deep!

I come from a deeply religious Catholic family. However, my French grandmother insisted on wearing a Star of David necklace publicly. She didn’t talk much about it, but her family name Lunel, used to be Ben David.

I did more research into the history behind that name and discovered an incredible history of mysticism, philosophy, scholarship, perseverance, persecution, and survival.

We don’t have great records of her family, and I am pretty rusty with my French (we only spoke it at home and never really learned to read it.)