Several years ago, a Pentecostal coworker of mine asked me, with furrowed brow, about the title “Co-Redemptrix". I rattled off an answer – something like, it’s just a theory that some people talk about, but isn’t really going anywhere. Turns out, I was right, but I don’t think there is any element of Catholic theology that can lead to more confusion. So, let us explore the idea of the Co-Redemptrix.
First off, we have to examine the linguistics involved here. Once again, we have an intertwining of Latin and English in such a way that the real meaning is all but lost at times. In modern English, if you use the prefix “co-“ in association with another word, it often means “with: together: joint: jointly", with the connotation of equality. Co-Chairman is an example of this, two chairmen (my spell checker insists on "chairpersons") serving equally. However, according to Professor Mark Miravalle , this is not the correct way to use the prefix in the case of Mary. “Co-“ is an abbreviation of the Latin “cum" which means “with". The title, according to Miravalle, refers to Mary’s cooperation with the Redeemer in the work of human salvation. In short, the idea of Co-Redemptrix refers to Mary’s cooperation, not to her personal ability to redeem us.
It is also true that John Paul II and Mother Teresa used the term Co-Redemptrix in public. There are two things to consider when looking at their use of the term. First off, it was always in the more Latin use of the phrase - Mary in cooperation with Christ. They never put the two on an equal plane. Second, they never did so in formal settings (at least, not that I’ve been able to find). The uses of the term were not done in a setting that required Catholics to accept the term.
In fact, there is something to consider in the way John Paul II handled the idea of Co-Redepmtrix. First off, you’ll have to admit that there have been few people who knew their Mariology better than JPII. However, in the entire length of his Mary-centered pontificate, he never dogmatically proclaimed the Co-Redemptrix idea. As Kevin Miller has pointed out, he had many good occasions to do so: the Jubilee Year of 2000, the international year of Mary in 1988, and the year of the Rosary in 2003. Even with these opportunities, it was not done.
Another contender in this discussion is Cardinal Ratzinger, now Benedict XVI. In God and the world, the then Cardinal says:
I do not think there will be any compliance with this demand ... within the foreseeable future. The response of the Congregation for the Doctrine of the Faith is, broadly, that what is signified by this is already better expressed in other titles of Mary, while the formula “Co-redemptrix‿ departs to too great an extent from the language of Scripture and of the Fathers and therefore gives rise to misunderstandings.
What is true here? Well, it is true that Christ does not remain outside us or to one side of us, but builds a profound and new community with us. Everything that is his becomes ours, and everything that is ours he has taken upon himself, so that it becomes his: this great exchange is the actual content of redemption, the removal of limitations from our self and its extension into community with God. Because Mary is the prototype of the Church as such and is, so to say, the Church in person, this being “with" is realized in her in exemplary fashion.
But this “with‿ must not lead us to forget the “first" of Christ: Everything comes from Him, as the Letter to the Ephesians and the Letter to Colossians, in particular, tell us; Mary, too, is everything that she is through Him. [my emphasis]
The word “Co-redemptrix," would obscure this… For matters of faith, continuity of terminology with the language of Scripture and that of the Fathers is itself an essential element; it is improper simply to manipulate language.
Now, who’s the pope?
The simple fact is, the idea of Co-Redemptrix is just that – an idea. It’s something that theologians discuss amongst themselves (over high tea, perhaps, or around a roaring fire swilling tankards of mead). It may well fade away over time, in much the same way that Limbo has been discarded after generations of discussion.

Keep up the good work. Ever think of compiling a FAQ list for Anglicans who have a toe in the water?
Chas,
The thought had crossed my mind, but I'm not sure how to format so that it would be updated with new information and questions. I may explore it eventually...once I get a few more answers written out.
Thanks for stopping by.
The term "Co-Redemptrix" was explained to me way back in the 1950's when I was at secondary school. I was taught that Catholics understand Mary to be co-redemptrix to the extent that she co-operated with God's plan to be the mother of the redeemer in giving her consent to the angel at the Annunciation. So insofar as the Redeemer had to be born to do His work, so Mary performed the work of bringing Him into the world. But, as Mark states, that is not to believe that Mary is equal to Jesus in the work of redemption. Mary is a creature and as such is the same as us and cannot be equal to Jesus, who is also our God. But Mary is the greatest of our race, and Catholics honour her as such.
Very interesting.
Am neither Catholic nor Anglican, though. I'm a Muslim.
Not surprisingly, there's nothing comparable in Islam, but in one respect it reminds me of some passionte Sufi expressions of love and reverence for the Prophet Muhammad, which sometimes ascribe a pivotal cosmological role and sweeping powers to him that would make many other Muslims uncomfortable (including some Sufis).
It makes sense psychologically as a natural human expression of gratitude and love. And perhaps it is easier for some to focus their hearts on a concrete by majestic (but inherently maternal) figure such as Mary as opposed to a challenging abstraction like the Trinity, or the person of Jesus Christ, who embodies both love and judgement. Like the saints, she is perhaps a more accessible object of veneration.
BTW, TypePad has a new feature for "featuring" a post (i.e., making it visible at the top of the homepage). You could include a link to a FAQ post there.
Thank you Mark. This helped a whole lot. I think I can hold on to these ideas and they will help.
Kathy