So I have this friend.

I have a friend who is going through a tough time right now. I don't know how to help her. At first, I just brushed it off as high school drama, until she told me she was going to go home and drink her problems away. I don't know what to say to her to make sure that she doesn't ruin her life over something that is not going to be very important in the future. Can someone help me?