Do you really believe that you can make this stuff up out of whole cloth? You cannot provide a single citation from the Catechism for either "another Christ" or a "co-redeemer" because they don't exist. Neither has any Pope ever declared Mary a co-redeemer in contradiction to the Catechism. And your fallacious repetition of the alter Chisti meaning the same as the direct translation is simply pathetic. Frankly, I thought the use of the term "Priestcraft" would have died with Alberto Rivera.
Do RC apologists just make this stuff up and hope no one catches it, or ...
Well, I can't think of another possibility.
In 1985, pope John Paul II declared Mary to be a "co-redemptrix" during a speech in Guayaquil, Ecuador. He said, "Having suffered for the Church, Mary deserved to become the Mother of all the disciples of her Son, the Mother of their unity...In fact Mary's role as Co-redemptrix did not cease with the glorification of her Son."
In 1935, pope Pope Pius XI gave the title "Co-Redemptrix" to Mary during a radio broadcast.
Here, read this link and learn something...