True, but I think the point of contention is whether Mary should be elevated to a special status when the scripture strongly indicates that she didn't even believe in him as the savior - at the time that he was in the flesh at least.
I am glad you agree Christ is the only Redeemer.
If one compares the catechism with the Bible there are many things in the catechism that are non-Biblical.
The catechism certainly does appear to take Mary to another level. There is nothing in the Bible about her praying for our salvation, intervening for us, Queen of Heaven, etc. That's all man-made conjecture.
Stick with the reading of the Word. Ditch the catechism.