If "redemptrix" and "mediatrix" are confusing because there is only one Redeemer and mediator, then deification/divinisation must be even more confusing and "inappropriate" because there is only one God...

Even "Lumen Gentium" taught it! "Therefore the Blessed Virgin is invoked by the Church under the titles of Advocate, Auxiliatrix, Adjutrix, and Mediatrix." (62)

And She truly is!