Sara, 42, from Embsay, was reported missing on Monday morning (25 November 2013) after she was last seen by her family at around 5pm on Sunday 24 November 2013.
Officers have now issued a CCTV image of Sara taken at an Ibis hotel in Leeds on Monday morning (25 November 2013).
The image shows Sarah wearing a pink fleece, dark coloured trousers and white trainers. Officers now know that Sara stayed at the hotel on Marlborough Street on Sunday evening, the image was taken at 9.40am as she checked out of the hotel.
She was then seen walking away from the hotel, heading in the direction of the bus station. This is the last confirmed sighting of Sara, she did not return to the hotel and it is not known where she went afterwards. Enquiries are continuing with transport companies.
Sara has friends in the West Yorkshire area and officers are appealing to them to get in touch if they have seen Sara since the weekend.
Officers are also working with other police forces including British Transport Police, and the Missing People charity as the work to locate Sara.
She is known to have contacts in the London, Kent and Devon area and officers are also appealing to anyone in these areas who believe they may have seen her, to get in touch.
Chief Inspector Simon Lovell of Skipton Safer Neighbourhood Team, said:
Sara has been ourt of contact now for four days and her family are beside themselves with worry.
We have teamed up with the “Missing People” charity which means that confidential information can be passed on to let families know that a loved one is safe.
We urge anyone who has seen Sara to contact the police or Missing People, or better still, if Sara sees or hears this appeal, please get in touch and let us know you are safe.
Anyone with information is asked to contact North Yorkshire Police on 101 and pass information to the Force Control Room. Or you can pass information to the Missing People charity on 116 000