When extreme endurance athlete, Lisa Tamati, was confronted with the hardest challenge of her life, she fought with everything she had. Her beloved mother, Isobel, had suffered a brain aneurysm and a stroke, resulting in massive brain damage; she was like a baby in a woman's body. The prognosis was dire. Relentless tells a story of despair, hope, love and the incredible insights found in the darkest of moments. It not only shares the difficulties...