Petaluma police are still looking for an at-risk woman who has been missing for a week. Sixty-four-year-old Valerie McCauley was last seen walking in the 1400 block of Mountain Avenue last Wednesday night. She was wearing a blue and white checkered dress shirt, blue jeans, brown shoes and a tan backpack. Police say she has been diagnosed with cognitive issues, which can cause her to become confused. Valerie had spoken about going to San Francisco but with no specific destination mentioned. Anyone with information on McCauley’s whereabouts should contact police.