Hey m8, I'm here with some happy news to tell you that stepping out of the LJBF scene is possible, no matter how long your friendship have been.
Just next time when she comes to tell you about one of her problems, say something funny like "Hey, I ain't your emergency telephone!"
Well, heres how I did it... It was quite stupid and dangerous way but anyway, with luck, it worked quite like a charm for me. Heres what I basically did:
First, I turned up gaming on her and gamed her like every other girl.
Well after about a month or two, I somehow got her angry to me because she found out about all my other girls (she goes totally wild and tells
my friends some gay stuff about me, crazy shit huh? anyway).
Now she is angry to me and tries to force me back to the LJBF-zone by saying that she doesn't want me to game her and other shit stuff like that.
Well right now I thought I had completely lost it, and I just cool her down and tell her that it isn't "gaming", its more like learning to speak to women, and if she thinks she can change me that easily, well shes wrong.
Now something goes *snap* in her head as I continue my gaming on her, I notice that I ain't in her LJBF-zone anymore, or at least thats what I could figure from the massive IOI flood and conversation which went straight from our fight to sex...
Also right now, I think that its never too late to game anyone, no matter who she is. I even gamed succesfully today this HB7 who hated me, because a month ago I ditched her and gamed her friend... Well anyway

Good luck.