She has now been found.
A new photo of the teenager has also been released.
Faith was last seen on Tuesday (21 February) at around 10pm at a property in Brimscombe.
Officers understand that she has links with Stroud and Stonehouse, but is also believed to have connections with the Gloucester area.
Faith is described as being white, 5ft 7ins in height, of a slim build and with bright pink hair.
She was last wearing grey pyjama bottoms and a grey and white dressing gown.
Police are appealing for anyone who has seen her or knows of her whereabouts to call Gloucestershire Constabulary on 101 and quote incident 9 of 22 February.
You can also give information through the Missing People charity on 116 000 or you can find out more information through the charity’s website www.missingpeople.org.uk