Mitochondrial DNA is a profound, primeval truth. As far back as all the creatures we can see with our naked eye, ourselves included, it’s meant that the blueprints for the energy of our lives are passed only through the lines of mothers. Poetry is all about such profound truths. Sometimes those truths possess lives in cruel ways. Sylvia Plath is known as a writer and a woman who killed herself. Her daughter became a writer. Her son has just killed himself. A tragic purification of the mitochondrial line. It so happens that Sylvia’s imagined rival, mistress of her husband Ted Hughes, and Sylvia’s rival to the dramatic (but not poetically) minded, also killed herself, and her daughter with Hughes. But that is soap opera, not poetry.