He had hoped his mother would one day die peacefully, Graham Woodman says.
Olga Grill, 88, had lived her life to the fullest and was still sprightly the last morning he saw her, hours before she was mauled to death by pit bulls.
"I tried to convince myself that she must have suffered a heart attack and died when she realised what was happening to her. But I know now that that isn't how it happened," Woodman said.