You said, "Again, 2nd Timothy 3:16-17 states that scripture is sufficient, which is the Catholic view."
If that is true, where does the doctrine of praying to Mary come from? I can't find a single scripture that supports it.
Well, for starters, It's not exactly fair to rip nine books out of the bible and THEN say, "but it's not in the bible."
But, Revelations depicts the souls in Heaven watching the events on Earth below while they pray to Christ.
I wonder if you can give a complete and accurate account of the doctrine of praying to Mary in such a way that a Catholic schooled in theology would say,"Yes. That's what we believe and teach."