Funny, you ever read the Gospel of John. I suggest you read Chapter 6, He is not being figurative. And please, stop being patronizing, it is does not shine favorably on yourself.
If by Co-redeemer you mean Mary said yes to God's plan for justice, yes she is. If you mean that Mary redeems us just as Jesus Christ redeems us, you are greatly mistaken.
"You are Peter and upon this rock I will build my Church."