On how this “slavery” affects prayer, merits, and intentions: it does not change anything important concerning us compared to praying directly to God, only that it gives more glory to God and even gives us and our loved ones more benefits.
First of all, even when we pray directly to God we will not necessarily get what we want. It will always depend on the Divine Will what the final disposition is. But then one might say that in the consecration it is Mary who makes the final disposition and even that Mary, even if she will not, has the power to choose which prayers, intentions, and merits will reach God Himself.
Considering the latter first, it is a laughably ridiculous concept. God is omniscient and omnipotent, it is impossible to keep anything from Him, and Mary of all people knows this, and even St Louis de Montfort acknowledged this. In fact, Mary does the complete opposite. He wrote in his other work
The Secret of Mary that in the Consecration, Mary “must become, as it were, an Oratory for the soul where we offer up our prayers to God without fear of being ignored” (
Secret, par. 47). To think so otherwise is a gross misunderstanding of St Louis’ works.
For the former concept, that Mary has the final say in how our prayers, petitions, intentions, and merits will be applied in the Consecration, it is more complex than that. St Louis de Montfort wrote:
I have said that the spirit of Mary is the spirit of God because she was never led by her own spirit, but always by the spirit of God, who made himself master of her to such an extent that he became her very spirit. (Treatise, par. 258)
So even though in the Consecration we intend for Mary to have the final say on our spiritual goods, it is actually done in cooperation and under the leadership of the Holy Spirit: God Himself.
So in summary, there is no deficiency whatsoever in having Mary manage completely our spiritual goods compared to going directly to God. In fact, we glorify God more by going through Mary, and we in turn receive many benefits. For as St Louis de Montfort wrote: “The Blessed Virgin, mother of gentleness and mercy, never allows herself to be surpassed in love and generosity” (
Treatise, par. 144)