Our dashound is having her babies right now .Sack came part way out with baby, she broke the sack and baby went back in what should I do or will baby come back out

Your question really is not appropriate for this forum. Breeding should be a very specialized area for those not dependent on a general Q&A site for support. Most of us here are familiar with how to cope with poorly bred and socialized puppies.

Please call your vet. This is a question that you should ask a professional right away!!