According to reports, Rebecca Hardy committed suicide by jumping a fence into a nearby yard with "dangerous" dogs.
The dog’s owner attempted to free the 22-year-old from the dogs, but could not subdue them.
Eventually he managed to pull the young woman away from them, but she had already suffered massive injuries to her neck and face.
She died shortly after being airlifted to Beaumont Hospital.
Two dogs (a pit bull and a pit bull-husky mix) and a puppy (another pit bull mix) involved in the attack have since been euthanised.
Dr. Ljubisa Dragovic, chief medical examiner for Oakland County, told The Times Herald that the young mum had scars, showing that she had attempted suicide in the past.
“She climbed the fence and jumped in and basically subjected herself to the attacks, which constitutes a purposeful act," Dragovic said.
"It's a sad story, but these are the facts."
According to CBS Detroit, Hardy knew her neighbor's dogs were dangerous and had always avoided them completely. "She did not get through a gate or through the front door of the house — and that clearly is a purposeful act," Dragovic further explained.
However Matthew Grattan, who shared 18-month-old daughter, Molly, with Hardy, has insisted that his fiancé would never have wanted to harm herself.
“I, in no way, shape or form, believe that she was looking to hurt herself on that day,” he said.
“She had a little girl… she wanted us to be a family.
"She was full of life and she loved her daughter with everything. She would brighten up the room when she walked in."
Hardy's mother, Terressa Engel, also told FOX 2 she too does not believe her daughter's death was a suicide.
She said: "I just don't understand how being mauled to death is suicide. They must have a new term for suicide."
A GoFundMe account, which claims that “it is unknown if she was aware of a dog in the yard” has been set up to help the family with Rebecca Hardy’s funeral costs.
The page adds: “We also ask you for many prayers and positive vibes. Becca was a great person and she will truly be missed by so many people.”