A friend of my 12-year-old daughter has started self-harming by cutting and scratching herself, and has shown my daughter - and then she told me. Should I do something? Should I tell her parents? Help please.
Scary stuff for any parent, and even more so at this age - sadly we know that the age at which people commence self-harm has been getting younger, and we also know that children and young people are experiencing higher levels of distress and mental health struggles, in part due to Covid-19, but it was a trend that had commenced well before the pandemic.
I believe there is a responsibility to do something, given her age. But the first thing I would want to do is to validate and affirm your daughter for coming to you. She is also too young to be holding on to information like this and she should be commended for sharing it and in doing so seeking out help for her friend.
As to your question, telling her parents- whilst certainly an option - it depends largely on your relationship with them, and your read on what kind of relationship she has with her family. She may be telling her friend - your daughter - because she feels she can't talk to her parents, and if so it would be good to respect that, and understand why.
Generally, when people reach out - unless the risk of immediate harm is acute - then the best plan is to talk with them about what help they might like - yes even when they are 12.