My Mom ran her usual area for 10 years safely, until the day she was attacked and dragged on hands and knees by her hair into an alley. Don't let your wife be lulled into a feeling of safety based on past experience in the area. You truly never know. She needs to be aware of her surroundings and make adjustments as necessary to avoid danger. She also needs to have the ability to protect herself, should she be confronted by an ill-intended person.