Interesting Interpretation,
That's a really curious idea, Helen as a Christ like figure..But i have to say I agree with ssauve. She's a good strong christian woman, who is prone to weakness just like the rest of us. I think that the scene that Scott referred to only strengthens that idea, she is simply a good christian woman doing what she knows is right. However, I think that if she had not have married Huntingdon, these values wouldn't have been made apparent in her. that is why she allowed herself to be swept off her feet by Huntingdon and his flattery because she allowed her naiveity and arrogance to make her think she could save him. She enters the marriage trying to change him, to fix him. and at first Huntingdon complies, but she is trying to force a man who has always done things one way to do them another! I believe that she didn't see his alcoholism as an problem addiction, its not until much later that the truth of the situation strikes her, she simply thinks he is choosing to drink himself into states of humiliating imbecility. It is important to realise that it cannot only be Huntington at fault here. there are two sides to every story and Helen cannot be excused on the basis that she is being a good christian.
The idea of Helen as a Christ like figure is certainly a appealing one, but you must read further into the novel and always keep in mind the fact that each journal we read, whether it be by Gilbert or Helen, is heavily biased. we see what these narrators WANT us to see and nothing more. there are certain subtleties where the narrators let information slip so to speak and it is important to look for them if you hope to gain a true understanding of what Bronte is actually trying to show us with her novel, aside from the obvious.