Where a woman sues over injuries sustained following a fall on an accumulation of snow and ice, the plaintiff must show that the accumulation was unnatural for the court to infer a duty of care owed by the defendant.The Illinois Appellate Court, 1st District, affirmed the decision of Cook County Circuit Judge Eileen M. Brewer.On Dec. 10, 2010, Elke Charfoos slipped and fell directly outside the entrance to a Staples store. According to her complaint, she slipped on “an unnatural accumulation of water, ice and slush …