How to deal with a friends loss

I am not really sure where to ask this, but I would like advice.. One of my best friends just lost her baby at 35 weeks. I have never experienced loss, I want to know how to talk to her. I don't want her to feel alone. She has a loving husband. I was going to be the baby's God mother so we are very close. I am unbelievably sad, but I know my grief is nothing in comparison. Have any of you experienced this? How would you have wanted people to respond or help?