I have a much less romantic view of how the Holy Spirit operates than you. The sins of pride and selfishness and reluctance to wrestle with the Spirit are certainly mine but I have been working at them a long time and will be still doing it when I am on my deathbed. I believe that God's love for us is so great that He does not wait until we are purified to such a great extent before He allows us to receive Him.
Grace, to the Catholic way of thinking, can and does use as its medium the imperfect, purely human, and even hypocritical. Cutting yourself off from Grace is a very decided matter, requiring a real choice, act of will, and affecting the very ground of the soul...In the Protestant view, I think Grace and nature don't have much to do with each other. The old lady [the one who would've been a good woman if she'd been shot every moment of her life], because of her hypocrisy and humanness and banality couldn't be a medium for Grace. In the sense I see things the other way, I'm a Catholic writer.