She had gone through four rehabilitation programmes to address her drug addiction and the man said she had been clean for seven months around the time of her death.
"The old [daughter] was back. Then the dogs killed her," he said.
The family's pain had been compounded by the fact he had been unable to see his daughter after the incident. "The injuries to her head were so gruesome we haven't been able to see her face," he said.
"What a way to die."
He said he hoped that the offender would turn his life around for the sake of his own daughter.
In March last year, early in the morning, the victim went to see the 53-year-old at his home on the North Shore. She was met by the dogs but went inside without incident.
However, when the offender had gone to bed she went outside where two of the rottweilers - one which had been loose and one which had slipped its chain - mauled her.
The dogs' owner provided CCTV footage of the event to police, who charged him a month later.
The court heard how the dogs had been well known for attacking cattle, postmen and passing vehicles.
The two that mauled the woman were destroyed, along with another which had been locked in a car on the property.
Hearing what they were like bewildered the victim's father.
"Why do people keep such vicious, dangerous dogs?" he asked.
As well as sentencing the offender to the maximum term of home detention, Judge Sharp ordered him to undertake 150 hours' community work and fined him $25,000 as emotional harm reparation. He was banned from owning dogs.
