Rattlesnake was initially charged with first-degree murder.

[nmba@mstdn.ca]

Rattlesnake was initially charged with first-degree murder. That charge was reduced to second-degree murder before she pleaded guilty to manslaughter in September 2025.

Her guilty plea was opposed by Nina’s family and the Edmonton Police Service, who asked a provincial justice official to intervene, calling the proposed agreement a “miscarriage of justice” that should be reviewed.

On the first day of the sentencing hearing, the Crown recommended a nine-year sentence, noting the findings of a Gladue report. The defence was asking for seven years.

Alberta woman to serve less than 4 more years in prison for girl's death after getting credit for time served | CBC News

Cries and shouts could be heard inside an Edmonton courtroom after Ashley Rattlesnake, 30, was sentenced for the death of eight-year-old Nina Napope Dumais. 

CBC (www.cbc.ca)

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