The States and Honorary police, Fire and Rescue Service and Jersey Water are today continuing the round-the-clock operation to find her.
Drones and thermal imaging cameras have been used to search around Queen’s Valley, but divers have not been employed. Officers are also making door-to-door enquires around Mrs McDougall’s house.
She was last seen in the area of Route de la Hougue Bie in St. Martin around 17:00 on Sunday and she was officially reported missing just after 21.40.
The Channel Islands Air Search plane was called out in the early hours of Monday morning to assist with the search.
Anyone who has seen her or has more information about her whereabouts is urged to call 612612, selecting Option 2.