After she was found guilty for the second time in the death of a foster child in her care in 2007, Lily Choy has been sentenced to six years in prison.

Last month, she was found guilty of manslaughter in the death of a three-year-old boy she was caring for in January 2007.

The sentence is twice what she was given after her first conviction, which was overturned by the Court of Appeal due to incorrect instructions given by a judge as the dead-locked jury continued deliberating.

This time around, the Crown said the case was very close to murder, and wanted Choy to serve up to sixteen years in prison.

From the beginning of the trial on Monday, the Crown argued severe head trauma sustained by the young boy, who can't be named, was "non-accidental".

He was pronounced dead on January 27, 2007, after doctors at the Stollery Children's Hospital could not control the swelling in his brain.

The defence argued the young boy was aggressive and he had displayed harmful behaviour before he slipped from Choy's arms and hit his head on the toilet – causing the injuries that eventually lead to his death.

The Crown said Choy had established a pattern of abuse, and alleged she had made the child sleep in the garage in the winter, wearing only a soiled diaper.

Choy left the Law Courts in the company of sheriffs Friday, to immediately begin serving her six year sentence, less six months for time already served.

The Crown has 30 days to decide whether it will appeal this sentence.

With files from David Ewasuk