Replies

Can you please cite any official dogma that cites otherwise?
If not, will you not see that there is unambiguous proof that the Church believes Jesus Christ and no other is the one mediator between sinful humanity and the righteous God.

To begin, we can say without doubt that the title "Mediatrix" is justified, and applies to all graces for certain, by her cooperation in acquiring all graces on Calvary.

The Second Vatican Council (Lumen gentium ## 61-62), said:

... in suffering with Him as He died on the cross, she cooperated in the work of the Savior, in an altogether singular way, by obedience, faith, hope, and burning love, to restore supernatural life to souls. As a result she is our Mother in the order of grace.

This motherhood of Mary in the economy of grace lasts without interruption, from the consent which she gave in faith at the annunciation, and which she unhesitatingly bore with under the cross, even to the perpetual consummation of all the elect. For after being assumed into heaven, she has not put aside this saving function, but by her manifold intercession, she continues to win the gifts of eternal salvation for us. By her motherly love, she takes care of the brothers of her Son who are still in pilgrimage and in dangers and difficulties, until they be led through to the happy fatherland. For this reason, the Blessed Virgin is invoked in the Church under the titles of Advocate, Auxiliatrix, Adiutrix, and Mediatrix. This however it to be so understood that it takes nothing away, or adds nothing to the dignity and efficacy of Christ the one Mediator. For no creature can ever be put on the same level with the Incarnate Word and Redeemer...."

So we answer, since Mary was associated with her Son in acquiring grace for us, she will also share with him in distributing that grace to us. This fits well with the words of the Popes, who call her the administra of grace, meaning that she administers or dispenses it. So Pope Leo XIII, Iucunda semper, said:

"... when He [the Father] has been invoked with excellent prayers, our humble voice turns to Mary; in accordance with no other law than that law of conciliation and petition which was expressed as follows by St. Bernardine of Siena : 'Every grace that is communicated to this world has a threefold course. For by excellent order, it is dispensed from God to Christ, from Christ to the Virgin, from the Virgin to us.'"

http://www.ewtn.com/faith/teachings/marya4.htm

None of these negates that Church believes Jesus Christ and no other is the one mediator between sinful humanity and the righteous God.
and

The fifth session of the Council of Trent (1546) laid out the belief in Jesus the one true mediator as the norm of Catholic faith: "[Original sin cannot be] taken away through the powers of human nature or through a remedy other than the merit of the one mediator, our Lord Jesus Christ, who reconciled us to God in his blood, having become our justice, and sanctification, and redemption."

1. in suffering with him -- so, she suffered alongside him -- His suffering and sacrifice is what saved us
2. She co-operated in the work -- so too do you co-operate with Christ when you pray and follow His gospel
3. you need to link "this saving function, " with the this referred which is "This motherhood of Mary in the economy of grace"
4. "but by her manifold intercession," contains the same significance as you interceeding with God for someone else, as in you praying to God for someone else
5. "she continues to win the gifts" -- note: She wins it. From whom? From God, from the Sole Mediator between sinful humanity and righteous God -- her Son, Our Lord and God, Jesus Christ.
6. "was associated with " -- note that this is commentary, not dogma.

7. Remember that Christ, the God-man, is the sole mediator between God and man (or woman) -- no woman or man can go to the Father excerpt through Him

Remember that Jesus is the vine, the source of grace. Yet we have Eph 4:39 Let no evil speech proceed from your mouth; but that which is good, to the edification of faith, that it may administer grace to the hearers.