Well just like The Trinity, the blessed Mothers assumption to heaven isn’t explicit. Her assumptin into heaven was documented in the 4 century, which is why all early Christian churches believe this, not just Catholics,
Neither Jesus body, or His mothers body was ever found. Which would be rare for such high profile people. Peters, body was found in Rome, and his death was documented. “The earliest reference to Peter’s death (outside the New Testament: see John 21:15-19) is 1 Clement (a.k.a. Letter to the Corinthians), written c. 96. In that letter, Clement, the bishop of Rome, says (chapter 5), “Let us take the noble examples of our own generation.”
“Through jealousy and envy the greatest and most just pillars of the Church were persecuted, and came even unto death … Peter, through unjust envy, endured not one or two but many labours, and at last, having delivered his testimony, departed unto the place of glory due to him.”
Regardless, in the scheme of salvation history, this ideology of the early church doesn’t make a difference to me one way or another. To me Jesus’ mother was blessed among women, and nothing will change that.
I don’t see why those with a complete void of early christian history obsess over it. Don’t believe it, who cares. That is your God given right of Free Will, and no real Catholic would pretend to play God and condemn you for it. That level of arrogance would be offensive to God, and most Catholics know better.
And, obviously, people are ignorant about the details in the writings of the Early Church Fathers, that detail the stories of the apostles being bi-located to Mary’s bedside as she was dying.
Or their accounts of the Assumption of her body into heaven.