How very very sad for your friend and how lovely of you to be so concerned. D&C has already been explained so i won't go into it. Just be there for her, hold her, let her talk, acknowledge her baby- but most of all just let her cry - she will do alot of that. Maybe in a week or so take something like a tree that she can plant in memory of her little angel baby. Miscarriage is something alot of people do not want to talk about, just let her share her feelings with you - you are a good friend.