Former gymnast Angela Walker on telling Yvette Williams' story

When Yvette Williams stepped onto the victory rostrum at the 1952 Helsinki Games it was remarkable for two reasons. She'd just become the first New Zealand woman to win an Olympic Gold medal - something that wouldn't be repeated for another 40 years. It was also the first time 'God Defend New Zealand' - not yet the official anthem - had been played at the Olympic Games. The moment is beautifully captured in a new book called "Ideals are like Stars: The Yvette Williams story". It's written by Angela Walker, who competed as a rhythmic gymnast in the 1988 Olympics in Seoul and went on to win gold at the 1990 Commonwealth Games. Yvette Williams became a national hero for her sporting prowess - an unusual endeavour for most women of her time. Angela joins Kathryn to talk about Yvette's life and the extraordinary coach they shared in common. Her book will be launched on Thursday at a virtual Facebook event.