"I don't want anyone to feel angry".
Ms Miles, who was separated from her husband, was described as a devoted mother who worked tirelessly to provide for her "smart and beautiful" children.
"If it wasn't for him, I wouldn't have Katrina, I wouldn't have her kids", he said.
"On Friday the Department of Education immediately provided specialist services to support students and staff at schools in Margaret River". But gun-control experts have been saying for years that Australia's laws have slowly softened, and they said it was still far too common for Australians to have more than one weapon at home around children.
After being alerted by a phone call before dawn, police found the bodies and two guns at the property, Western Australia state Police Commissioner Chris Dawson said.
Mr Aaron Cockman's children - three boys and a girl aged eight to 13 - were among the seven people found dead by police on a rural property in Osmington, a tiny town of 135 people near the Margaret River wine region of Western Australia.
All the victims appeared to be residents of the property, police said, but did not explain how they were connected.
"We are treating this as a matter in which six persons are the subject of a homicide crime scene, [while] there is a seventh person deceased".
"I still love who Peter was", Mr Cockman told reporters in Margaret River on Sunday, marking the first time he had spoken publicly about the tragedy.
Police have said they found three licensed guns on the property belonging to Miles and they are not looking for any other suspects.
Then the police found the victims that are four children and three adults.
Mr Dawson confirmed the firearms were licensed to Mr Miles.
Mr Dawson refused to disclose any additional particulars in regards to the man who tipped police off.
"It's still very early in this investigation, but based on what we do know, this is clearly a tragedy".
It's Australia's deadliest mass shooting since 35 people were killed in Port Arthur, Tasmania in 1996.
Katrina Miles, her four children and their Grandmother Cynda Miles.
"Communities such as Margaret River have seen trauma before and they will recover, but this will take some time".
Miles also had been lining up farm maintenance work with a neighbour in Osmington, and was scheduled to meet up with him on Saturday morning at 10am.
The commissioner would not comment on the possibility of murder-suicide.
"They were a very socially-aware family, doing their best to create a safe community, and that is why it is so shocking to think that could be destroyed so quickly".
"I had so much anger in the last few years", he said.