My BEST FRIEND WANTS to COMMIT SUICIDE!! HOW do I STOP HER!??!?!?!?!?!?

No, i am not thinking of commiting suicide, but my friend is, idk what to say to her. She had some issues in a relationship and now she thinks her life should end!!!!!!! HELP!!!!!! I already talked to her and she won't listen, she wont calll the suicide hotline #, WHAT SHE I TELL HER!?!?!?!?!?!?!?!