The iconic photograph of apartheid South Africa, captured during the Soweto Uprising in 1976, features three people: the dead body of Hector Pieterson, a stoic Mbuyisa Makhubo carrying Hector, and Hector's sister - Antoinette - at his side, grieving. Today, Antoinette remains in Soweto, advising the museum named after her brother. When we arrived at the museum, she was standing in front of an enlarged version of the famous photograph, doing an interview for BBC. We watched and wondered: how could she spend every day of her adulthood so closely attached to what must have been the most tragic moment of her life? Fortunately, we had an opportunity to ask.