I would encourage you to be with her in her mourning. Let her know that she's not alone in her sorrow. That's something we can all do with one another. So many times we try to fix things or make life look better than what reality portrays. But its when we sit down with one another and share our lives is when healing can begin.
If she wants to weep, weep with her. If she wants to be silent, be silent with her. If she wants to share stories, listen with her. It's not the words "It'll get better." that will lead to healing, it's "I'm here with you no matter what." that leads to hope. 