Yeah that’s what I was taught in the RCC. That Mary is the “mother of God” and the “co-redemptrix” with Christ. That she’s the one who crushes the serpent’s head. Also that she is the intercessor to Jesus, who is the intercessor to God. We actually worshiped her, although we used the term “venerate” which means the same. Our church was even named after her.
I did learn later the Truth that there is only one Intercessor who is Jesus Christ, He is my Redeemer through His death and Resurrection, and the only one who defeated Satan and destruction.
Is Jesus the only way to Heaven?
https://www.gotquestions.org/Jesus-only-way.html
Good info on Mary here:
What is the Hail Mary that Catholics say so often?
https://www.gotquestions.org/Hail-Mary.html
Yep....and the last part is based on a bad translation which is still the official translation of Rome.