After a failed romance Sandra became a voluntary patient at a mental hospital near Redhill, Surrey, where she was treated for depression. She became engaged to a builder named John and took a job as a children's nanny for a doctor in Croydon. On 13 March 1964, she gave birth to a boy named Stephen, but, as her relationship with John was failing, she returned home to live with her parents and considered giving the baby up for adoption. Her parents took on the responsibility and adopted him in May 1965.