A 15-year-old girl is charged after a woman was assaulted at a Sarnia grocery store Tuesday. Officers responded to reports of a stabbing at the Real Canadian Superstore on Murphy Road around 7:45 p.m., police said. A 30-year-old woman with cuts to her head and neck was taken to hospital where she was treated and released. The teen is charged with assault with a weapon, possessing a weapon for a dangerous purpose and disobeying a court order. She was arrested at the scene and held in custody.Moto