You are pulling the paragraph out of the context of the Catechism and distorting it to fit a conclusion you'd probably already drawn. I CAN see that.
Nonetheless, despite your spin and exegetical gyrations, Catholic teaching does not make Mary a deity, neither explicitly nor by effect.
Perhaps you would be kind enough to explicitly define the terms 'co-redemptrix' and 'co-mediatrix', and how Mary came to win those titles, because to a Protestant mind, the 'co' prefix suggests partnership, and suggests a role in redemption and intercession that we would reserve particularly and singularly to Christ. It is blasphemous to suggest otherwise.
Whatever basis you may have would be favored by Scriptural references to back them up (there's that sola-scriptura thing again, pesky Protestants...)