I would like to pose that the above summary still has some weak links that require further thought/exploration (and note this thought is a compilation of ideas and is no means an authoritative statement) and probably should contain less assertive language to be just to it. Nevertheless let’s explore distance/remoteness:
I would like to pose that your entire train of thought is based on what I’d like to call; the illusion of sin.
Allow me to explain.
You have a ditch digger, he throws a handful of dirt at a co workers face. He gets a punch in the noes.
To his boss he gets fired. To a passing cop he gets arrested. To the president in war time he can be put to death for treason.
While most of you reading this would agree that makes sense, it just a hand full of dirt. What marks the severity of the action is who it was done too and ultimately what that person represents. Throw that same handful of dirt at the president ten years prior and you are back to a punch in the face.
Now you can philosophically spin the use of dead tissue, organs, bodies any way you like but at the end of the day it really doesn’t matter. Your corporal form will degrade till what makes your dynamic system you no longer dynamic and you will cease to be whomever you are. Our respect for the dead is for our own social benefit the same way that throwing dirt in high ranking officials is bad for order.
God is perfectly happy and all powerful. He doesn’t care what condition your body is in ultimately. He can resurrect it on the last day however He likes. He is unmoved by the happenings of the universe as is the condition of his Godhood. There is nothing in this universe that harms or hurts Him in any capacity.
That said as the avatar of love and justice He has an interest in our well being.
Now you bring up the point that …
the body does not belong to the child - the body belongs now to the Earth and to God.
The earth belongs to the living as degreed by God. If you died and I really need your bones to live most people would grungingly allow if there was no other way.
In this case, we have a vaccine that was created with research that maybe we should never have allowed BUT like your death that shouldn’t have happened, we now have the bones to use to save other lives.
To not is to waste this resource and not attempt to bring some good out of tragedy.
Leave the dead to bury the dead, we have work to do.