Detectives are questioning a man on suspicion of murder after the death of a millionaire's daughter.
Ms Healey lived in a cottage in the grounds of the hall
Officers found the body of Suzy Healey, 39, on Monday morning after being called to Ellerker Hall, in the East Yorkshire village of Ellerker.
The mother-of-two is the daughter of millionaire Malcolm Healey, who made his fortune through Hygena Kitchens.
In a statement released through police, Ms Healey's family said they were devastated by her death.
A 37-year-old man was arrested in the Scarborough area on Monday morning and taken to Bridlington for questioning.
On Tuesday evening detectives were given permission to continue holding him until Wednesday morning.
Det Insp Nigel Sawyer, of Humberside Police, said officers were called by a friend of Ms Healey who had been unable to raise her at her home.
"Police officers from Humberside Police entered the premises where they found the body upstairs," he said.
Ellerker Hall stands in the centre of the village
A post-mortem examination was carried out in Hull on Monday evening.
The cause of death is not being released for operational reasons but a police spokeswoman confirmed Ms Healey had not died from natural causes.
On Tuesday, she was formally identified by family members as Susan Dawn Healey, a mother of two daughters aged 17 and 14.
"Scenes of crime officers are still at Ellerker Hall and will be continuing to search for evidence at scene," the spokeswoman said.
Detectives are making inquiries in the village and will be talking to local people about the victim and the days leading up to her death, she added.
Ellerker Hall is a large country mansion, standing in 10 acres of land and located in the centre of the quiet village.
Ms Healey, who is believed to live in a cottage in the grounds, runs an animal sanctuary at the hall.
She was filmed by the BBC last year for her work taking care of neglected horses.
Peter Bolton, who works for the local RSPCA, described Ms Healey as a tremendous person who cared for animal welfare greatly.
"She was just a lovely kind person who had a heart of gold when it came to animals," he said.