The article on CNN doesn't say that.
http://www.cnn.com/2007/WORLD/asiapcf/05/31/nz.lifesupport.ap/index.html
"Sheehan said Muliaga's breathing grew worse in the two hours after the power was disconnected and she was "basically dead" when the ambulance arrived."
How long after the power was cut was the ambulance even called? Other interesting points in the article....
"Muliaga's family claim that she and her son told the technician she needed the oxygen machine to stay alive and invited him into the house to see it.
But Mercury Energy and its parent company, Mighty River Power, insisted Thursday they were never told that Muliaga depended on the electricity supply for her oxygen machine.
Meanwhile, the Counties-Manukau District Health Board, which issued Muliaga with the oxygen machine after her recent hospital admission, expressed surprise that she was so reliant on the machine that disconnection may have caused her death.
Chief medical officer Dr. Don Mackie told Radio New Zealand that Muliaga would not have been sent home if she needed the machine to keep her alive.
"People who are on this are capable of breathing for themselves ... That is why we are surprised that she deteriorated and tragically died so soon after the support was withdrawn, and we need to understand more about that," he said."
Me thinks we'll be hearing more and more to this story as time goes by.