Sally Davis accused of stabbing mum Trish Lambourne to death in Adelaide, murder suicide

A woman and her mum who she reportedly killed in a suspected murder-suicide on Monday morning have been identified.

Sally Davis, 41, is said to have stabbed her mother Trish Lambourne to death before setting their home in the Edwardstown suburb of Adelaide alight. 

When the emergency services arrived, flames were contained to a single room in the house and once firefighters had extinguished the blaze, police officers found the bodies of the two women inside. 

Sally Davis (left) is thought to have stabbed her mother Trish Lambourne (right) to death before setting their home in the Edwardstown suburb of Adelaide alight

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The first responders, who arrived to the house at around 5am, reportedly discovered a knife with which Ms Davis is thought to have stabbed her mother with. 

A man who did gardening work for the pair said while Ms Lambourne was reported to be looking after Ms Davis, who seemed to struggle with disabilities herself.

Chris, who had been doing the gardening at the Emerald Street property for about a year, was in the area when the fire broke out. 

‘I saw a commotion happening up that way so I went over and was shocked to see it was their house,’ he told Daily Mail Australia. ‘It is very sad.’

The mother and daughter had kept to themselves since moving in to the community housing property, neighbours said.

Police and emergency services were called to a house fire in Emerald Street, Edwardstown – 6km southwest of Adelaide CBD at around 5am on Monday

South Australia police confirmed the bodies of two women were located inside the house  

A pictured posted to Twitter post in October 2021 shows both them wearing matching t-shirts with the words ‘it is against my religion to wear a mask or get a jab against my will’ written on them.

‘I believe in God not government’ was written on the back of Ms Davis’ shirt. 

The mum and daughter lived in the home which was owned by a community housing provider called Your Place Housing. 

Sally Davis (pictured)  lived with her mother Trish Lambourne in community housing

Southern District CIB Detective Chief Inspector Kieran Baggoley said the police had never been called to the house and are not looking for anyone else.

He said a neighbour had called triple zero after noticing a fire inside the house.

A Metropolitan Fire Service crew of 20 extinguished the blaze in just under 10 minutes.

Major Crime detectives were at the scene on Monday, along with forensic and patrol officers.

The cause and circumstances of the fire and the death of both occupants remain under police investigation

Det Chief Insp Baggoley said said smoke had travelled through the ‘majority of the house’ and damage was estimated to be at around $100,000.

He said the incident was a ‘tragedy’ and there was no ‘sugar coating’ it.

Your Place Housing owns more than 500 properties across Adelaide and helps to house people struggling with disability or social disadvantage.

The organisation’s chief executive told The Advertiser some tenants were supported through disability service providers.