At the scene this afternoon, relatives gathered outside the home, hugging and comforting one another.
Neighbours who spoke to the Herald said they had heard yelling and shouting from the house shortly before an ambulance arrived.
At least two women were seen arguing on the front lawn.
One neighbour said the woman and one of her daughters had been arguing all morning.
The woman left the house and got into her car, her family believing she had driven away. But she was later found inside the car, still parked outside their house.
An ambulance was called, and paramedics pulled her out of the vehicle and on to the street to try to resuscitate her, he said.
"That's when they saw she had blood on her."
Her daughter also had blood on her, he said, possibly from trying to help her mother from the car.
The woman and her family are thought to have lived in the street for several years.