Yes, through Mary–and in no way without her sweet help–we are all called to help save souls.
The difference between Mary and everyone else is that–as the saints like Bernard and Maxilimilan Kolbe tell us–she is the Mediatrix of all graces.
Popes like Blessed Pius IX, Pius X, Leo XIII, Benedict XV, Pius XI, Pius XII, etc, tell us that every grace we receive comes through Mary*.
She is the new beginning. She is the Immaculate Conception. She is–as Pope Pius XII and John Paul II, for example, tell us–the Spouse of the Holy Spirit.
As Vatican II tells us, “there is a union of Jesus and Mary in the work of our salvation”–Mary being subordinate to Christ, and “brings us the gifts of salvation” from him.
As Pope Pius IX tells us in the bull defining the Immaculate Conception, Mary is holier than all the rest of creation together–this is also very strongly confirmed by Leo XIII–and one cannot even imagine a greater goodness than Mary besides God himself.
Here are some passages from Pius IX Innefabilis Deus that help us to understand the awesome goodness of our Mother in the order of grace:
"From the very beginning, and before time began, the eternal Father chose and prepared for his only-begotten Son a Mother in whom the Son of God would become incarnate and from whom, in the blessed fullness of time, he would be born into this world. Above all creatures did God so loved her that truly in her was the Father well pleased with singular delight. Therefore, far above all the angels and all the saints so wondrously did God endow her with the abundance of all heavenly gifts poured from the treasury of his divinity that this mother, ever absolutely free of all stain of sin, all fair and perfect, would possess that fullness of holy innocence and sanctity than which, under God, one cannot even imagine anything greater, and which, outside of God, no mind can succeed in comprehending fully."