Just saw the update with the photos. I wish we were allowed to have pets where I live, because I'd happily take one of those little adorable things off your hands. How sweet are they?
Gin, for whatever it's worth, is there a chance that the mother is a wild (feral) dog and that she's somewhere in the area of the cemetery? No matter, you did a good thing by bringing them home. Now let's hope you can find some good homes for them.