I have know my friend for 18 years and have ended my friendship with her several times over the years she spread rumors about other friends of mine and than twists things around and she will try to get me to turn against them and she will try to get them to turn against me as well. She has a brain disorder and I feel real bad for her. I harldy ever see her and I find when I talk to her on the phone I feel awful after when I happy she brings me down and she has said some real hurtful things about some of my other friends and am afraid she will create problems again and I care about my friendship more with my other friend than her. I want her stop making up things and not try to ruin my other friends reputation and am afraid that she will try to say things about me that will get back to him to create a rift she has a mean streak in her and am not sure what to do about it since she is not mentally stable and I cannot trust her. I need advise of what to do and how to handle this before she gets worse?