The best thing you can do is be that available ear for whatever comes out of her mouth. Validate every emotion, no comparisons or minimization. She has to go through the grieving process no matter what so the best thing you and her loved ones can do, is make sure she's grieving safely andhealthy. That will be the best gift in the long run. For now, a card is fine along with checking up on her frequently and down the road. First year is always the hardest.