Judging from the picture it seems as though the dead haven't been dead for very long. Any stillborns I have got in the past were almost always born first, but fully developed and normal looking. As if the sac broke early and they suffocated inside the mother. Any theories why this happens? Why many still borns look like they died mere hours from birth?

As for the total number, that's weird. Unless she's holding more and they are dead too.