She is described as wearing a light pink, long-sleeves set of pyjamas, while also wearing a white bag with a daisy design.
In a statement, the force said: “Eudine was seen alone on CCTV at around midday.
“We are extremely concerned for her welfare and officers are carrying out urgent enquiries to find her.
“We’re asking local people to call us straight away with any information about her whereabouts.
“If you live in Thamesmead or nearby, please check gardens, sheds and locked areas, as well as any CCTV or doorbell footage.”Please call 999 if you see her or if you have any information.”