At your age (and your friends) I had those same problems, and did not even know Christ then. I cannot count how many times I have tried (obiviously unsuccessfully) and should have been dead. But Glory be to God that He saved me, and from many hurtful things as well. I will give both of you this advise (since you say that you feel the same way). First off, even though you can relate to what your friend is going through, you are not in a good position to give advise (IMHO) on this matter. One or both of you could bring the other down to success of the situation. You both need to realize two things.
1) Whether you are a Christian or not, you are a child of God, and He loves you very much. If no one else (in your opinions) would be hurt, He would.
2) Even though you may find good (and possibly safe advise) in these fourms, you both need to seek an adult you can trust in confidence. They may tell of your situation to a counselor, or maybe eventually even to your parents, but that is because they care (when you guys say no one does) and want to help you do the right thing.
Unfortunately life at times right now is not very good, but God is, and always will be in control. Satan does not like this, and he will try to mess with as many minds as possible by telling people lies, and creating trouble. But fear not, because our God is far mighter than satan, and one day will triumph once and for all over him, and bring you home in "His time". For now seek him in prayer, and study His Word. Both of you have a long, and prosperous life ahead of you, and He has a purpose in mind for you both. If you are not Christians, I invite you right now to ask Jesus into your hearts and ask for his forgiveness. Confess to Him your sins and your trials. Let Him show you that He cares for you both and loves you. Ask Him to be your Savior and master of your life, and watch what He can do if you just let Him. Be honest, sincere, and humble, for God knows all our hearts.
I and many others will be praying for you and your friend, and many others in this situation. As a matter of fact, how about a prayer right now?
Heavenly Father, I come to you in the name of your Son, Jesus Christ, our Lord and Savior to request that you would watch over these two young ladies. Father so many do not understand the world as it is today, and think by ending life will make it easier. It may for them, but not those who would have many unanswered questions that are left behind. Father, I pray in the name of Jesus that you would break the bonds of satan's lies, and release these children's hearts to you. Father, you have blessed many of us through your grace and mercy, your love for us, to bring us through these very same situations, and now we know why. Father God may they too feel your love for them as your children. May you take away the pain, the loneliness, and fill that hole in their hearts that was made just for you. Heavenly Father, I also pray that if these young ladies are not saved and do not know your Son Jesus Christ, that they will take this opportunity right now to do so, for tomorrow may be too late. Send your Holy Spirit to be their guide.Teach them, forgive them, and love them as you have us, and may your grace and mercy be bountiful and a shining light in their darkest of times. It is in your Son' s most Holy and Precious name, Jesus Christ I pray. Amen
Now both of you go to the Father's arms as He is waiting for you to come to know Him today.
Many will be praying for you both
In His Peace