I'm currently 19. At the age of 14 I started to selfharm, there was a lot of issues going on in my family life. But that often isn't the only reason as to why us teenagers selfharm and end up depressed.
I would suggest that the closest person in your family sits her down and asks her what is going on in her life and why she's so upset. Often we're unable to say the issues out loud, so a good thing to do is to ask her to write all the things wrong in the life and number them in order of how much it's effecting her.
As teenagers we're very good at hiding things from adults, especially things like depression etc. I had an eating disorder depression and selfharm for about a year. I'm extremely close to my parents but they had no idea until I tried to kill myself.
You obviously really care about you're daughter and she is very lucky for that. Issues like these never fully go away, they will always be there in the background. Its just a matter of learning how to deal and cope with them.
Hope this helps. Love Mini61 x
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