My best friend is schizophrenic and keeps hearing this voice in her head which tells her to kill her mother, sister and me. She was put on pills for it and was doing okay until the guy she liked got a girlfriend. Now she doesn't tell anyone anything, she's self harming again, making herself sick and she's flushing her pills. I'm terrified of what's going to happen to her and I don't know how to stop it. She overdosed on her anti-depressants last night, taking 12, and now she says she is a failure because she isn't dead, and she isn't in hospital. I thought everything was okay, until she told me she just wasn't telling people her problems any more.

I could really use some advice, if anybody can give me some, please?