More than 400 officers have been deployed in the hunt for Freeman, who fled into wilderness in Victoria's high country following a fatal confrontation at a property in Porepunkah.
He is accused of shooting Detective Leading Senior Constable Neal Thompson, 59, and Senior Constable Vadim De Waart, 35.
In a statement issued by lawyers on Sunday, Freeman's wife Amalia Freeman shared her "deep sorrow" for the deaths of the two officers.
Ms Freeman said she would co-operate fully with police and insisted she and her children didn't hold "anti-authority views".
"We echo the requests of Victoria Police for the swift and safe conclusion of this tragedy," she said.
"Please Dezi, if you see or hear this call 000 and arrange a surrender plan with police.
"If anyone is harbouring, helping or supporting Dezi, please call 000 immediately and speak with the police."
Anyone with a snippet of information should call police, she said.
Victoria's Police Minister Anthony Carbines said the search was placing a strain on resources but everyone was doing everything possible to bring it to a conclusion.
"We're throwing everything at it," he told reporters.
Reinforcements from NSW, South Australia and the ACT have been involved in the search made more difficult by blizzard-like conditions.
Potential links between Freeman and a 61-year-old man charged with weapons and drug offences are being probed as part of the ongoing investigation.
The man was arrested following a search of a property in Bright, about 6km from Porepunkah, with weapons and cannabis seized.
"As this matter is before the court we won't be making any further comment," a Victoria Police spokeswoman said.
Police have received several reported sightings of Freeman since he went on the run, although none have been confirmed.
Disused mines, caves and dugouts have been combed as part of the search.
Freeman, who has bush survival experience, was last seen in dark green tracksuit pants, a dark green rain jacket, boots and reading glasses.
He is believed to be a sovereign citizen, a follower of an ideology that rejects government authority and the rule of law.
Ms Freeman and the couple's teenage son were arrested following an operation at an address near the town's centre, before they were interviewed and released.
Police haven't ruled out pressing charges.
A police command post has been relocated from Feathertop Winery just outside Porepunkah to a government office in the town of Ovens, about 12km away.
Police said the site was fit-for-purpose as their search continued.
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