About Mary Louisa Plummer Mary Louisa Plummer is a social scientist and a long-time friend of Ma-Nee’s. Much of her professional work has focused on public health and children’s rights. Books by Mary Louisa Plummer A Two-Spirit Journey The Autobiography of a Lesbian Ojibwa-Cree Elder by (author) Ma-Nee Chacaby with Mary Louisa Plummer