WhereYouLeftIt is totally right. It is completely fucked up and way beyond any 15 year old's ability to handle this. Your dd doesn't want it repotred but whenever we pass on information we run the 'risk' it will be reported, as no one can turn the clock back and un-know something.
So your course of action is not (or should no be) based on what your dd wants but on what is best for her and for this boy.
Having said this I do not know how much r he would recognize his behaviour as abuse, he feels entitled to do this because that is how society operates. But remember the girls threatening suicide if Take That split up! Anyway can behave in his kind of fucked up way, if allowed to do so.
Papyrus is a charity that helps with young people affected by suicide thoughts etc. I think they can advise on self harm.
www.papyrus-uk.org/help-advice/why-do-i-feel-suicidal/selfcare-and-selfhelp
I would go through the school. I would not speak to the parents directly unless you know then really well.
skiploom so sorry, that is terrible.
I agree with Emily.
It is a very serious attempt to manipulate the emotions of a young impressionable girl but a young impressionable boy. I am not sure the boy even knows fully what he is doing but his self harm could lead on to suicide threats. Both self harm and suicide threats are 'contagious' or so I am led to believe.
So this is an issue for the school to contain and deal with.
There is no way your dd should feel 'guilty' or 'responsible'. She may well feel sorry for him and want him to get the best help.
Agree with Gazing "I think you need to explain to your daughter that this is too serious an issue for you to be able to just stand by and not say anything. It's actually a kindness to the boy in the long term to inform the school etc. as his current behaviour is very worrying and he needs help to develop more healthy relationships with his friends and with himself."
If anything worse were to happen and you had not reported it but you and you dd would feel a sense of responsibility. Your dd is not responsible for it happening but you can report it, that is the kindness you can do for this boy.