THE CATECHISM OF ST. PIUS X
4 Q: Why is it said of Jesus Christ that He ascended, and of His Most Holy Mother that she was assumed, into heaven?
A: It is said of Jesus Christ that He ascended into heaven, and of His Most Holy Mother that she was assumed, because, Jesus Christ, being Man-God, ascended into heaven by His own power; but His Mother, being a creature, even though the greatest of all creatures, was taken up into heaven by the power of God.
4 Q: Why is it said of Jesus Christ that He ascended, and of His Most Holy Mother that she was assumed, into heaven?
A: It is said of Jesus Christ that He ascended into heaven, and of His Most Holy Mother that she was assumed, because, Jesus Christ, being Man-God, ascended into heaven by His own power; but His Mother, being a creature, even though the greatest of all creatures, was taken up into heaven by the power of God.