Is there a Saint Charlotte

There is no saint Charlotte. There is, however, Blessed Anne Marie Madeleine Thouret, also known as Sister Charlotte of the Resurrection. She was a Carmelite nun, professed on August 19, 1740 and made sub-prioress in 1764 and 1778. She was the sacristan of her house's chapel and one of the Carmelite Martyrs of Compiegne.