Socks is loving life with you @Papergirl1968, so that's one good to come out of this. And Matt loves her too.
I don't want to sound trite but adoption can end up ok for all concerned. Really.L-o-a-d-s of girls have had babies adopted and end up with stable families, honestly they do.
It's easy - I know I would - to see every dark foreboding. It's a very good sign DD isn't pregnant again. And an even better sign that the adoption wasn't contested, which I suspect is the case.
Call the RSPCA and ask them to help re the dog - they often run aid schemes at their local branches.