Plz help .. help prevent suicide can any one hear me?

so my friend yesi is always depressed she wasnt like this but then Again i dont really remember wen she was happy were only 14. im just to young to be feeling this old she always says how shes not gana make it throw hight school. how theres no one thats ganna miss her at all hows her lifes not worth living i keep on tilling her how there will n would be people tht would miss. her shes been like this every scene last year. she always says how if she could n she will she will commit suicide if she could. i keep on tilling her just to call boys town n talk to some one tht can help her she has n i think still does cut its disturbing. how her wrist are i tell her swallow your pride n jst call it will help but she wont i need help. how do i convince a gurl thts so deep in deprision she wount listen she dosnt see the point of living no more. i would miss her to much if i would loser i need help how to convince her to ust call boys town plz. help shes sick she needs to talk to some one she needs help quick