Your own catechism says Mary is partly responsible for saving men's souls, not just by birthing Christ but by actively intervening in men's lives and decisions and influencing God's reaction to them.
Every true Christian knows salvation is the SOLE responsibility of Jesus Christ.
Shame on the RCC.
That is a gross manipulation of the Catechism and reading what is not there. Permit me to simplify, to an elementary level, the Church's teaching on Mary's participation in our Salvation. Whether you agree with these doctrines and dogma's is irrelevant to an understanding of what the Church teaches.
Unlike your belief in Irresistible Grace, the Catholic Church teaches that we must all cooperate with Grace for our own Salvation. Mary, by Her unique role and perfect example of consent, cooperated in the Salvation of all. Catholics do not believe that Mary saves.