You can’t prove a negative. It’s like that whole episode of Bush being at some army base.
People claim he wasn’t there and their proof is that they didn’t see him.
Likewise with Mary’s bones.
If Catholics even COULD produce a skeleton, that would STILL not *prove* that the bones were even really Mary’s. They could have been any female’s.
Not being able to produce a skeleton does NOT prove that she was assumed because there are too many other valid reasons of why someone wouldn’t have them; like nobody recalled where she was buried or they crumbled into dust by now.
That’s true, except we do know that some people, Enoch and Elijah were carried up into heaven.
The argument for her bodily assumption is that it all fits together. Her immaculate conception, her sinlessness and the assumption. The wages of sin are death. As Mary was sinless, death could not claim her and so she was bodily assumed into heaven.
Here is what we do know:
St. Juvenal, the then Bishop of Jerusalem, stated at the Council of Chalcedon (451), that Mary had died in the presence of the Apostles, but the Apostles opened her tomb they found her body missing. They then concluded that she had been bodily assumed into heaven.
This was investigated by the Council and confirmed.
This is why it’s not in the Vulgate. It may have been known previously, but we don’t have any documentation.