Check out the great post on Joan of Arc on Catholicism Pure and Simple. I particularly liked the point about Joan’s obedience, but it was also good to know a bit more about the context: I had not made the connection with the scandals in the Church at the time she lived.
“Will you refer yourself to the decision of the Church?” asked the prosecutor.
“I refer myself to God Who sent me, to Our Lady, and to all the Saints in Paradise. And in my opinion it is all one, God and the Church; and one should make no difficulty about it. Why do you make a difficulty?” answered Joan.