Greek Father St. John of Damascus testified “St. Juvenal, Bishop of Jerusalem, at the Council of Chalcedon (451), made known to the Emperor Marcian and Pulcheria, who wished to possess the body of the Mother of God, that Mary died in the presence of all the Apostles, but that her tomb, when opened, upon the request of St. Thomas, was found empty; where from the Apostles concluded that the body was taken up to heaven.”
You did not source this quote.. :)
Was this voted on and accepted by the council or simply a time frame? Can you say with certainty that 'St John of Damascus" was INFALLIBLE??
From The Catholic Encyclopedia
Regarding the day, year, and manner of Our Lady's death, nothing certain is known. The earliest known literary reference to the Assumption is found in the Greek work De Obitu S. Dominae. Catholic faith, however, has always derived our knowledge of the mystery from Apostolic Tradition. Epiphanius (d. 403) acknowledged that he knew nothing definite about it (Haer., lxxix, 11).
The dates assigned for it vary between three and fifteen years after Christ's Ascension. Two cities claim to be the place of her departure: Jerusalem and Ephesus. Common consent favours Jerusalem, where her tomb is shown; but some argue in favour of Ephesus. The first six centuries did not know of the tomb of Mary at Jerusalem.
So there is no date, no time, no location, no sure knowledge if she was alone or not.. no cause and not even a sure burial place
And when the third day was ended, the voices were no longer heard; and from that time forth all knew that her spotless and precious body had been transferred to paradise.
And after it had been transferred, behold, we see Elisabeth the mother of St. John the Baptist, and Anna the mother of the Lady, and Abraham, and Isaac, and Jacob, and David, singing the Alleluiah, and all the choirs of the saints adoring the holy relics of the mother of the Lord, and the place full of light, than which light nothing could be more brilliant, and an abundance of perfume in that place to which her precious and holy body had been transferred in paradise, and the melody of those praising Him who had been born of her-sweet melody, of which there is no satiety, such as is given to virgins, and them only, to hear. We apostles, therefore, having beheld the sudden precious translation of her holy body, glorified God, who had shown us His wonders at the departure of the mother of our Lord Jesus Christ, whose prayers and good offices may we all be deemed worthy to receive. under her shelter, and support, and protection, both in the world that now is and in that which is to come, glorifying in every time and place her only-begotten Son, along with the Father and the Holy Spirit, for ever and ever. Amen.
http://pages.uoregon.edu/sshoemak/texts/dormitionG2/dormitionG2.htm