To be a child means to owe one's existence to another, and even in our adult life we never quite reach the point where we no longer have to give thanks for being the person we are.
Only the Christian religion, which in its essence is communicated by the eternal child of God, keeps alive in its believers the lifelong awareness of their being children, and therefore of having to ask and give thanks for things.
Her (Mary's) Son first had to be the Child of the Father in order then to become man and be capable of taking up on his shoulders the burden of a guilty world.