Caroll Ann Hopkinson, 58, a psychiatric nurse who also runs an animal boarding business was marched from the home in Taperoo in a nightgown after the body of a 60-year old man was found.
It's understood she lived there with her husband, Simon Hopkinson.
Police would not say whether he is the alleged victim, only that the pair was known to each other and it was not believed anyone else was involved.
The woman contacted emergency services at 8.40am.
They rushed to Medina Street but the man was already dead.
Neighbours told 9News a couple had lived at the house for the last 10 years and were often out on the street walking their dogs.
"It's always been a peaceful street," Neighbour Kyla said.
Major Crime Investigators joined forensic teams combing through the home.
Hopkinson was formally placed under arrest and charged with murder and will face court tomorrow.
