If the counsellor is doing it for the reasons I think they are then that's not it. First they'll get her out of the environment that is potentially harmful (I know it makes you angry hun but for just a moment, step outside yourself at look at it without a view - subjectively?). Away from people who may inadvertantly and/or unintentionally giving her ideas. Then they'll help her to get better, they'll teach her how to deal with the feelings and ideas so that later on when she does encounter other people or if said ideas and feelings return, she knows how to deal rather than turning to the kind of behaviour she's doing right now.
Do you see? The point is to give her a chance to clear her head, sort of. Yes, friends are important. Very important. Very very. But... *sigh* I don't know what words to use or in what order. You don't know what is running through your friends head. actiosn speak louder than words, Do as I say, not as I do. Why can't I find the words??
"People with problems" are never truely fixed, truth be told. Even after you get help and counselling, that inclination to ... self-mutilate or whatever is still there. It's just a matter of learning how to deal with it.
Cutting her off from her friends is one method that can be used in the process. For some people it's necessary, for others it's not. They're assuming that it's necessary for your friend. Like I said, if she doesn't like it and if it does nothing for her, then clearly it isn't the right method for her and another counsellor should be found.
I hope I'm getting across what I'm meaning to. I'm not too good at it when I really want to...at least the net lets me think it all out before saying it.
*hugs for catrat* lvoe you darl, hope your Happy CD helped a bit