Our 16 yr daughter has left home to live with her boyfriend and his mum. We have not spoken to her or seen her in over 5 weeks. We are distraught, she has not even contacted her elderly grandparents. We were all so close. She has been totally brainwashed by this pair. We don't know what to do next. We have contacted police,social services,nspcc,childline. No one can help as she is 16 and has gone willingly. Any suggestions as to what we can do next