Most certainly does not...It means persons or an object sharing something equally...
The prefix “co-” has different meanings. Sometimes it means to share in something equally. Sometimes, as in this case, it simply means “with.”
By the way, the term “Co-Redemptrix,” as far as I know, has never been officially accepted by the RCC. That is, there’s debate in the RCC over it. So, you’re all getting upset over a term that has never officially been adopted by the RCC.