[annalex]

But the Church does not teach a unique co-redemptive role. Mark Miravalle likewise speaks of us all being participants in the redemptive work of Christ. Of course, Mary is the only one who gave birth to Him, and of course only Christ is divine.

A Google on "Theotokos, Save Us" yields dozens of entries.

Some modern Orthodox Christians don't like the words "Most Holy Theotokos, Save Us." They would prefer the words "intercede for us," reminding us that the exclamation "Save Us" is confusing to non-Orthodox. The veneration of Mary is not for the non-Orthodox. Once people have been fully converted to Christ, the love of the Panagia follows naturally.

Most Holy Theotokos, Save Us

[Kolokotronis]

“Some modern Orthodox Christians don’t like the words “Most Holy Theotokos, Save Us.” They would prefer the words “intercede for us,” reminding us that the exclamation “Save Us” is confusing to non-Orthodox. The veneration of Mary is not for the non-Orthodox. Once people have been fully converted to Christ, the love of the Panagia follows naturally.”

Yup.

[kosta50]

But the Church does not teach a unique co-redemptive role

Technically, no, but there are may in the Western Church who would like to make it a dogma that Mary is the Co-Redemptrix, and no one else. Certainly the Western Church is not opposed to Catholics holding such beliefs.

Some modern Orthodox Christians don't like the words "Most Holy Theotokos, Save Us."

It's not a matter of "liking" or "disliking," but a matter of theological concern that a human being is being elevated to a demi-god.

"Once people have been fully converted to Christ, the love of the Panagia follows naturally."

Goes without saying.