my friend is really depressed...

hi my name is ruth and i have this friend who i'll pretend is called jane. we r both about to go into yr 9. she is really depressed and recently it has got even worse. she just sent me this text message:

I rlly need 2 no. if i were hanged u wouldnt get upset right? plz say u wont b affected? plz think NOTHING of this. but can u plz plz reply b4 2moz night. jane x

i didnt no what to do so i sent this message back:

ok. not sure what 2 think. um... dont want to lie so i would be upset. sorry if thats not what u want to hear. see you tomorrow. ruth x

i tried to think nothing of it and for a day everything seemed ok but then i checked my phone and she had written:

this just makes it harder. coz i dont want to upset any1, but i dont wanna continue. i guess i just expected no one would care enough 2 b sad. sorry i should stop. i shouldnt of asked u anything 2 begin wiv, its not right 4 u... Bye, luv ya, jane x.

i dont know what to do. her parents split up years ago and she hardly ever sees her dad but i dont no if this is the cause of it.

recently she has got a lot worse and my friend saw cut marks on her wrist. she thought nothing of it and left it. but she noticed some newer ones and got worried so 3 of us went to speak to the head of our year. she tried to get jane some counseling but jane asked me afterwords whether it was me who 'told on her'. she said she didn't blame me but it has made everything worse. i felt so bad.

once she confessed to me that she had thought of suicide and now i'm really scared she will commit suicide.

please please tell me what i should do!

Ruth x