Well, hmm... That's a tough call, since I know nothing about how your friend is...

So I'll just say it from my personal stand point.

If I were your friend, going through a rough time, I'd want to know for sure that you're there for me, no matter what... And that you understand what's going on, not just saying you do. Really, just staying there and being a good friend to her will help her a lot.

Sorry I'm not much more help than that... Hope things get better soon!