THE Australian mother convicted in Canada of drowning her two young sons in a bath tub is set to be released from hospital and deported, outraging her former husband who fears she could kill again in Australia.

The prospect of the woman, 34, walking free from the Alberta hospital today and flown to Australia has also raised concerns with Alberta authorities, who hope to appeal what they deemed as a lenient sentence.

"Will anyone there know about the murders she committed here?" her former husband said in a statement released to the media.

"Being only 34-years-old will she start a new family and have another child in her care?

"I am appalled that a person who kills two innocent children and leaves their dead bodies (for her husband to find) next to the wedding ring she hadn't worn in months has only served 10 months."

The woman was sentenced to six years jail for the 2010 drowning of her sons - aged 10-months and two-and-a-half - in the bath tub of the family home in Millet.

She was charged with two counts of second-degree murder, but a judge convicted her of the lesser charges of manslaughter because it was found the woman, who suffered depression, did not have the requisite intent for murder.

While the woman was sentenced to six years' jail, it is standard in Canada for prisoners to serve just two-thirds of their sentence.

The woman also received credit for time in custody since her arrest.

The Crown is appealing her acquittal on the murder charges and is asking for a 12-year jail term, but the appeal is yet to be heard.

Alberta prosecutors are asking the Canadian government to keep the woman in Canada, but the Canadian Border Services Agency has confirmed she will be deported to Australia on release.

Originally published as Killer mum set to return to Australia