This is a bit of a complicated one, so my ds is in y7 and has a step cousin in y7. SC is fine when they are outside of school at grandparents but unfortunately SC (12) is vaping, hanging out with older kids and he has a gf who is 15 ( nearly 16). I'm worried what might happen, this just seems so wrong to me but do I interfere and say something as they know my info has come from DS?