I need help regarding stillbirth.

I have an acquaintance (one of the girls' past daycare teachers) who had a stillbirth two days ago.

Four days ago, she stopped off at my house when she saw me and the kids sitting outside in the warm Colorado sun and we talked about her impending birth. I touched her growing belly and we discussed how she was "done" having babies because this was her second child, a boy, and her first was a girl. The very next day she went to her OB appointment (36-38 weeks) and the baby no longer had a heartbeat. She gave birth the next day and was told it would take up to a month to figure out what happened.

I am at a loss of what to say or do. One thing I'm not doing is ignoring it. I wrote her a letter conveying my support. But that's all I know what to do. She lives very close. Should I see if I could take her daughter for an afternoon so she could sleep or cry or do whatever? Or does she need to be with her daughter right now? Should I bring food? Should I just stop by for a quick hug?

What do I do?