These are some of my personal thoughts.
I believe the Trinity set Mary in a role of petitioner for mercy. Because this then would give God more reason to give more mercy without upsetting the balance of Justice. It gives God an excuse to be more merciful because she pleads on our behalf, and since she refused God nothing, but did his will perfectly, then he grants her requests. Jesus not only gave us his life, but also his mother.
So now since she is so close in friendship with God and with us, being the highest in heaven and at the right side of her son, Queen of Heaven and earth, she gets what she asks far, just as she did at Cana. I believe that God designed it this way so that he could give us more than max in mercy that would not go contrary to justice because of her intercessary requests.
It has been the customary practise of catholics to say the morning offering.
“O Jesus, thru the Immaculate Heart of Mary, I offer you my prayers, works, joys, and sufferings of this day for all the intentions of your sacred Heart, in union with the holy sacrifice of the Mass throughout the world, in reparation for my sins, and those of the whole world.”
This sanctifies our whole day’s activity.
Just a thought.