give her hugs if she needs them, and just let her know that she can talk to you about it however much she wants to. I always just wanted a shoulder to cry on, I didn't want anyone to try to "fix" me, I just wanted them to let me grieve. It was also helpful to have something I could hold. A lot of women feel the same, so maybe you could find her a stuffed animal in the baby's memory that she could squeeze? So sorry for your friend's loss 
Oh my God I am so deeply sorry, how heart breaking , all you can do is just be there and let her know you care, I wont lie it will be hard for her to see to you being pregnant, you are pregnant , right? She just needs some time and she needs counseling. How far along was she? You are a good friend and that is what she needs the most now/
