She was born full of grace, preserved from original sin. Thats why she didnt die a bodily death. When her time on Earth was complete, she was assumed, body and soul, into Heaven. Thats why she isnt buried anywhere, unlike St. Peter, for example, who is buried in the Vatican.That belongs in the same book as Little Miss Muffet and Tom Thumb...
Jesus had to have been born to a sinful human so he could bear the temptations humans go thru...