I completely agree with you. It sounds to me like she's doing it purely for the attention and I think those are the people that need the help most. They're obviously insecure about themselves and feel as though they have to do this to be cared for. Look beyond the surface with your friend. She's not being fake. There's probably a real serious issue there and she needs help.
As for being open about
SH I'm that exact way. After I cut for the first time I told people. I was scared out of my mind. And you know what one of my best friends asked me? If I was doing it for attention. This hurts me really badly because all everyone seems to think is that I express my emotions for attention.
My ex writes his feelings in songs and posts them all the time but when I do that I'm being dramatic.
Anyway. I know how you feel. I don't mind showing people my scars. I'm just not going to go posting it everywhere. I'll only show people I'm close to.