sentences:  Ridgway, who was offered a lift by Obara, was drugged; this led to chloroform-related liver failure and brain death.Obara's culpability was exposed when, while using an alias (Nishita), he had taken an unconscious Ridgway to the hospital claiming shellfish (oyster)-related food poisoning.Ridgway died after life-support was stopped at her family's request; she was then cremated and repatriated to Australia.