From what I have read in previous books, Banting was a little over the top. I know a fellow who once described Banting as a mess following the death of Marjorie, so the book seems accurate on that account.
I do agree about you about Elizabeth Hughes. But then again, I am not certain she was really much more than any of the other people portrayed. It makes me very interested to learn more about Elizabeth as she aged. One of the interesting things is how few people know Elizabeth was diabetic when she died, According to what I heard not even some f her family members knew it. I also find it interesting that Elizabeth burned much of her diaries just before her death.
I think with all that secrecy. the author may not have had much of a chance to interpret her as more than a 2 dimensional character. It is a shame really. I tell you i feel the most sympathy for the otehr little kids of the story.