Um...I don't have that much experience in this, and I might be totally wrong, but when my mum found out and she started trying to blame herself that just made me feel worse. Because in my case it had nothing to do with her and it just made me feel so bad that she thought that, and I admit I was kinda mad at her too for being that...self-absorbed I guess. Because I didn't want attention or anything, but she found out her youngest daughter was cutting herself and just immediately went into "I'm a bad mother" mode, which I couldn't handle on top of everything else so just got really defensive and carried on cutting...just a word of warning maybe...