These people, like Sister Miller, can not be reasoned with, cajoled, or shown the error of their misperception. They are dyed-in-the-wool communists with an odd, religious fervor that brooks no argument.
All you need to know about the good Sister is that she would vote for a Nancy Pelosi, Barney Frank, Harry Reid, Fidel Castro, or Barack Obama over the Pope for public office.
Yeah, some people are deficient in the open-to-persuasion department, but I wouldn't jus assume tha she's completely closed off to reason. I used to be quite a leftist, and I could tell you about some memorable moments when somebody had a serious private conversation with me, sent me an article, wrote me a note, confronted me in public or otherwise jolted me into considering another point of view.
Very often people like Se. Paricia Miller have never been offered a serious countervailing argument. They literlly think they have the only legitimate point of view, because they are entirely unexposed to anythng different.
I think people should try to reason with her. Every convert proves the power of truth to change lives.