[A.A. Cunningham]

Co-Redemptrix - Latin meaning the woman with the Redeemer. Co-Redemptrix does not mean the woman equal to the Redeemer.

Those of you who slept through Latin class may now return to your blissful state of ignorance.

[Bayard]

Notice the clever use of co-redempress, instead of redemptrix?
clever change of conjugation supplying a perfect reason for people to fume.

[RegulatorCountry]

An understanding of Latin is not exactly rare.

The meaning of the word co-redemptrix is clear. "Co-" as in copilot or coequal. The meaning would be “partner” in the English equivalent. Redemptrix is the feminine form of Redeemer. So, the Latin roots do mean that such a co-redemptrix shares a role in Redemption.