“I imagined a dying person’s last breath as something resembling an exclamation mark, distinct and hanging mid-air like an interrupted thought. My older sister Fikile’s last breath before she dies is nothing of the sort. There is no rattling noise at the back of her throat. No relentless twitching. No clinging to life. Fikile dies with no more fuss than a switch of a light bulb.” With her sister, Fikile, dead from breast cancer, her father long gone, her mother emerging from years of slumber,...