Ah, I did find something on Australia! Her parents were August Cyrile Rachal (b.1834) and Camila LaCaze. The connection must be through August. His parents were Jean Baptiste Espallier Rachal and Marie Susanne Metoyer. I've poked around but cant' seem to find a full listing of their children. If I can just find if they had a daughter named Carmelite, I might could solve this...