Phoebe is described as a white girl with shoulder-length, blonde hair and of a slim build.
She was last seen wearing grey jogging bottoms, a black sports bra, a black puffer jacket and black slippers. We believe she was last seen carrying an orange Sainsbury shopping bag.
She has connections to the Forest Gate area of London.
If you have seen Phoebe, or have any information on where she could be, please call 101 quoting incident 36 of 15 February.