Depression Support Group
Depression is a real and debilitating condition that is often misunderstood by family and friends. Its meaning can range from a prolonged period of sadness to an actual mental illness with specific symptoms. Find and share experiences with others who are going through the same struggles.

As for your bff, I am sorry that things are so rough. I think you and her family are all just worried about her. I know what it's like to feel like that special someone is gone....but I never stopped caring and worrying. Maybe keep trying to reach out to her. Maybe she is feeling alone as well and that is why she turns to her addiction. Just remember, all you can do is try. You are her bff, not her savior.
And also remember that you have a place to go for support. We are here to help you and let you know that you are not alone.....we all need "alone time" at certain points in our life, but too much of it isn't good for us. Good luck my friend. Hang in there and know we are here for you. :)