At any rate, there is no "equating" Jesus and Mary here on the part of Fr. Dean (or the Catholic Church), but true honor is being given to the Queen of Heaven and earth, exalted by God Himself above all Angels and the rest of men to be His Mother.
Regarding Mary being a sinner: Could Jesus have preserved His Mother from sin by the foreseen merits of His Passion? Was it fitting that He do so ("Honor your father and mother")? Well, that's what He did and that's why the Angel could call her the "fully graced one" κεχαριτωμένη, (kecharitōménē). If she were a big sinner (like me) the Angel would have had to say, "Hail, not so fully graced one".
May the Lord Jesus bless you!
How you go from "full of grace/full of favor/etc." ... to ... "sinless" is beyond me.
Since Mary was sinless, and already full of grace ... does that mean she never partook of the Lords Table in communion?