She will now need to tell them that not only is she leaving but that she filed without even separating first.
This is the fourth or fifth time you've mentioned this. I get the sense that you really want W to tell the kids this so it doesn't make you look like the 'bad guy' thereby absolving you of this. Why are you placing this on W? I have news flash for you! Your W does NOT need to tell them if she doesn't want to at all. You cannot control this part.
Why don't you corral your daughters and tell them the facts now? We've given you some guidance and scripts to to this. What's stopping you?