We're expressly forbidden to pray to any one other than the Triune God for anything.
"Jesus answered and said unto them, Ye do err, not knowing the scriptures, nor the power of God." -- Matthew 22:29
By definition, that's mediation. If you can't see that, you're down to denying the meaning of words in the English language.
Funny you quote that verse.
Quote the verse before it, the next time you're tempted to call Mary or any of the saints, "dead".