She focused on teaching etiquette to professionals and corporate executives. Currently, Castelbajac is the CEO of Le Void, Inc., a lifestyle company she owns with her son, Louis Marie de Castelbajac.
Castelbajac concentrated on educating high-level executives and professionals in proper behavior. She currently serves as the head of Le Void, Inc., a company she co-founded with her son, Louis Marie de Castelbajac.