Her neighbours, who were at the scene of the fire this morning, said the victim arrived at their house, yelling for help.
The couple, who did not want to be named, were very shaken by the accident.
They telephoned emergency services straight away but the fire was "out of control." They cared for the woman, who was "very brave", until the ambulance arrived.
The truck was parked in the bush, and received minor damage. However, the storage area beside it, where the generator was, was badly damaged by the fire.
The blaze is being investigated and a fire safety spokesman said today that they were not sure exactly what happened.
The woman's neighbours said they were pleased they were friends "otherwise I don't know if she would have come to us for help".
They said their neighbour had lived there for about five years, her husband worked away from the area and efforts were being made today to make contact with him.
"Our priority today is to visit her and make sure she is doing all right."