Praying for you and don't try and figure it all out right now.
Let God comfort you.
Father we lift up our friend here and ask that You would cover them in your Love and peace and help them to not only get through this horrible event but to strengthen them to be a comfort and help onto the family and friends of their friend.
In Jesus Name we pray.
First my heart goes out to you in your loss.
Second welcome to Talk Jesus even though as it appears in your bio. that you don't believe in Jesus Christ as your Savior.
Third, do you want to tell us what happened? As Brother Wired 4 Fishen said. We can pray, and do pray for you and those affected by this loss. If you don't feel comfortable in open forum, you are welcome to contact us via PM.
I have gone through this before. It is a hard thing, but not too hard for God. Even in the pain still lean heavily on Him. He is always able in every situation. The pain will not simply disappear but God can make it bearable for you.
I am praying for you and others affected by this thing.
If she killed herself then you are not at fault. But as to the pain you feel, it testifies that at least you loved her. And she is not truly dead, only her body has expired, her spirit still exists, may the Lord have mercy on her. If you talk to the Lord about it, He will help you with the grief, and I pray that you come to know the Lord more in the weeks and months ahead. Praying for you!