I recently did the total consecration to Jesus through Mary through the Nenevah 90 website. I understand I give Mary all the merits and indulgence of my prayers and good work to dispose of as she pleases. Does that mean I can’t earn an indulgence for a specific person, say my father dies I can’t specifically earn one for him?
Hi. It is great that you did the Consecration.
It seems, though, as if you are not understanding the consecration, on some level.
In a manner of humility, you pass your good works through the Immaculate Heart of the Blessed Mother, who, in the power of the Holy Spirit, can distribute these graces as she so pleases, as the Holy Spirit, her Mystical Spouse, updates us with what we need, just as He knows all that we need - nothing is outside the Will of the Father.
The whole point, is in fact, humility. By this consecration, one is leaving nothing for oneself, trusting that the more we consider ourselves to be nothing, the more God can fill us. The consecration makes room for Him. Just as the Father looks at humanity through the wounds of the Son, so the Son will then meet us in the Immaculate Heart of Mary - under her mantle.
So, as other posters have said, God knows what we need. If we leave nothing for ourselves, trusting that God will take care of us anyway, then this trust is the equivalent of an increase in faith.
Our own measure often falls short, we are not perfected, and our choices can be tainted by selfishness, even the best acts can be, and so by placing ourselves in the Immaculate Heart of Mary, we ask her to clean our offerings, before they go to her Son. I remember reading that our offerings to God can be like an unwashed and less-than-good condition apple (I might have gotten the analogy incorrect). Our Lady being Immaculate, washes the apple, makes it favourable and splendid, and offers it to God, on our behalf.