My friends baby died this morning and I don't know how to help (very sad).?

This is the time to be a true friend and give your friend as much support as possible in her grief. Know that there is nothing that you can say or do that is going to ease her pain, but by being there for her you will help her greatly. This is the most terrible thing that can happen in anyone's life and if she knows that you are there for her that is enough for you to do. Since she called you as it happened she wants your support. You must be alert to any cues that she gives - if she seems like she needs to be alone then respect that. You can always call again later or the next day to let her know that you are there to help in any way that she needs you to.