[Dr. Eckleburg]

The question was whether or not a redeemer is a deity.

If so, then to say Mary is a co-redeemer is to deify Mary, which several RCs dispute is occurring their churches.

[Petronski]

“Redeemer” does not equal “co-redeemer.” Catholicism doctrine does not teach “co-redeemer” status of anything.

Catholics dispute the deification of Mary in Catholicism because there IS NO deification of Mary in Catholicism.

As I said, your question has nothing to do with Catholicism.