awww this is terrible! i couldnt imagine how shes feeling, i would be in pieces.
my sisters border collie got out about 2 months ago and was knocked over and dragged along the road by a 4x4, we thought she wouldnt make it but someone was obviously looking after her up there as she survived and the vet managed to save her leg that was almost completely ripped off, shes still got pins in her leg but is making an amazing recovery, even the vet cant believe shes doing so well.
We were lucky that we had a happy ending and we truely thank our lucky stars that Megan is ok.
My heart really goes out to your co-worker, i couldnt imagine how i would feel if that happened to my little Millie
im sosorryfor her loss x