Eleanor Williams was 18 years old when she made the mistake that has haunted her for her whole life.
It was December 2, 1983, and Williams was mum to a three-month-old baby girl, April. Williams was sitting in a bus station in Washington, waiting for a bus to take her to Kansas. She had already travelled more than 300km from her home in Virginia that morning, and had a long way still to go.
A friendly young woman, who said her name was Latoya, struck up a conversation with Williams. The woman asked if she could hold April for a minute. Then the woman said April needed to have her nappy changed.