A mother desperate for her girl to come home says her daughter has mental health issues and is vulnerable.

Police are continuing their appeal for information to trace missing 15-year-old Rhiain Clarke of Northolt .

The teenager was last seen at about 5.30pm on August 4 at her home in Shadwell Drive and although she has been missing more than 100 times in the last couple of years, this is the longest she has been missing for.

Rhiain, who is white, of slim build, about 5ft 2inches tall with long light brown hair, was last seen wearing black tracksuit bottoms with paint on, a pink pyjama top and blue Nike trainers.

Her mum, Kay Clarke, 42, said: “Rhiain has Attention deficit hyperactivity disorder (ADHD) and Oppositional defiant disorder (ODD).

“She is on a control drug for her ADHD and has not had her medication for a week now.

“She will believe anybody and has no sense of self danger. We have never got to the bottom of where she runs. She was going off with older men and has been sexually groomed in the past.

“Windows and doors have to be locked up.

“Wherever she is I feel she does not have the choice to come home because she would have done.”

Mrs Clarke said the police have been unable to guarantee they will move their case from the medium risk category to higher risk.

She said her family have been putting posters around the area because there do not seem to be any up.

The mother added: “I keep thinking I’m going to get that knock on the door to hear she has died or she’s been sex trafficked.

“She is very close to her sister Tegan, 16, and it’s absolutely killing her. She also has a 22-year-old sister Sian, and a brother Rhys, 19.

“Her three-year-old nephew Kyron keeps saying he has to wait for Rhiain, he knows something’s not right.”

Rhiain is known to visit Ealing , South Harrow and Harlesden.

It is not believed she has a phone or Oyster card on her.

Anyone with information should contact Ealing Police on 101 quoting ref: 14MIS027647, or contact the charity Missing People on 111600.

ADHD is a group of behavioural symptoms that include inattentiveness, hyperactivity and impulsiveness.

ODD is a disorder where children have disruptive and oppositional behaviour particularly directed towards authority figures, such as parents or teachers.