Praying With Mary

Think I read somewhere a while ago that all our prayers and supplications pass thru the hands of Our Blessed Mother... 

Maybe some saint wrote about this.  I don't remember.

While probably not a dogma or an official church teaching, it seems like a pious and lovely thought. And indeed, it seems reasonable. 

If God wished to redeem and save humanity with the help of Our Lady (Gen 3:15 ff), would not God let Mary participate in its day-to-day redemption as well? 

Mary always points to Jesus.