Police say they are growing increasingly concerned for the welfare of 48-year-old Emma Mitchell, who may be staying at a Cornish hotel or B&B.
She is 5ft 6ins tall with blonde or strawberry blonde shoulder-length hair.
She was last seen wearing blue jeans, black knee length boots, a dark long coat, cream scarf and a cream or white jumper. She may have her dog with her, a brown dachshund, and might be travelling in her vehicle, a dark grey Nissan Juke, registration RE61FFW.
Please call 101 with any sightings or information and quote log number 390 of January 13, or 999 in an emergency.