The girl or my friend i dont know which one fits it

I know a girl that took her own life
a girl that decided to die
cuts on her arms by a knife
i didn't even get to say bye

she meant alot to no one
no one cared about her
now they realize what they've done
but in a way don't see she had probs too

i know that girl
that was a friend of mine
i too never realized she
was being left behind

my friend was smart
a friend that would listen to me
she had a good heart
but sadly she found the key

the ending of this story is a knife
and tears from absolutely no one
well you know that friend that took her own life?
I'm the friend.......

that took mine