She was last seen at approximately 8.30am on 2 March in the Tunstall area.
Tanya is described as white, of a slim build, with shoulder-length blonde hair and green eyes.
It is believed that she was last seen wearing a long black coat, patterned grey scarf and black trousers.
Anyone who has seen Tanya or knows of her whereabouts should contact us on Facebook, Twitter, or call 101, quoting incident 580 of 2 March.