Oh no
I'm so sorry. That kind of a loss has got to be one of the most heart-breaking.
Hugs to the family and you and everybody involved. So so sad.
As far as telling the other dcfs, I wonder if the dcps are already on that? Maybe you could text the dcf and ask if it'd be okay. That's what I did when a baby had died in utero within our dc 'family' and dcm was fine with it. I figured the grieving family could use all the support they could get and wanted to avoid all the heart-wrenching good intentioned congratulations and questions.
I'm so sorry.