A 15-year-old girl has died after an assault by a woman on Big River First Nation. RCMP responded to a serious assault around 8:45 on Monday night. Police say a woman assaulted a female youth, who was later pronounced dead by EMS. Her family was notified, and the woman was arrested at the scene. Twenty-two-year-old Maryanna Sakebow from Prince Albert is charged with second degree murder.