If you want the pups to live you should let them finish their time in the womb. On the other hand you should see the vet for an x-ray to make sure she really is pregnant or did not reabsorb the litter. Someone needs to be with her and the pups the first few days too.
If she is having uterine inertia or has a pup too big to deliver she might be in trouble you don't suspect too.
I know you'd prefer not to go to the vet but that is the best bet at this point. The vet can induce her with pitocin too.
There really isn't any herbal or home remedy way to induce labor though a friend of mine swears taking the dog on a drive down her bumpy roads to the vet seems to do it quite often for her!
Hope this helps you!

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