I agree with Ally Cats Mommy, continue to be there for her. I know that after I lost Tony, nobody was able to comfort me for almost a week after he died. Nobody could say or do anything, but I remember what everyone did and said to me during that time, it just was that I was not ready to be consoled by anyone.

Everybody is different in their grief process, just continue to be there for her, respect her wishes (if she wants to be left alone or she would like company), and offer to her anything that you can do for her. She will come back around in time. Just being there for he is the most important thing right now.