@Sun Surfer - I think that is pretty much how I saw it too.
I also saw Nora as being honest, with others and with herself, and with no more faults than most of us have.
Perhaps I am biased in my conclusion because compared to many of the spitting, biting, punching, lying, manipulative, vindictive self entitled men and women I have had to deal with, mostly amongst the likes of unionists and activists, she was an angel without fault

.
Regarding the nun, I felt that she knew and had guidance to give for too much, that for me stretched the bounds of credibility unless one was of the persuasion to grant her as having the guidance of some superior being (which I am not able to grant so found her a weakish character).
I have bought a copy of
The Master, when I ever get to read it I do not know as my reading pile is too high, but I figured that it is more likely to get read if I have a copy than if not :-).