If you or your husband were home for the birth maybe there would be five little squeaky squalling kittens, maybe not. But from what you described if YOU hadn't brought her home with you momma cat very likely would not have survived to give birth and none of the kittens would have made it.
Look for the good in what is, rather than regrets for might-have-been.
Look for the good in what is, rather than regrets for might-have-been.