Yesterday my 13 year old autistic nephew left home. Packed a bag, told my sister that he was going to move in with his girlfriend and left. His girlfriend is 16 (and pregnant, apparently planned) and living at home with her mother, who has seemingly welcomed him into her home with open arms.
Sis has called police, who've said they can't make him come home (although they did go round there and tell him he should come back the next day). Sis has also phoned SS who basically said the same thing - they can't make him come home. They don't even consider there to be a child protection issue! They have opened a case because of the baby, but don't seem to have any urgency in dealing with it, or protecting nephew from what we're considering grooming/sexual abuse (he's been completely brainwashed by his g/f and her mother).
Is there anything more my DS can do? Seems bonkers that a (vulnerable) child she's legally responsible for can just go and live somewhere else?