The interesting facts are that it appears her editor is to have more credit than anyone understood. She could not have created TKAM without the editorial push. It seems clear to many that her recent book which came from a bank vault manuscript, was the original novel draft she submitted and was told to extensively re-write,
The editor led her through re-wites until we have TKAM as we know it. Without that guidance, she never produced anything else of worth. She had the “voice” but little else of the craft is my conclusion, unfair as that may be.
I have an Aunt that knew her well and until recent years had been in touch with her on a regular basis. She knew her from New York and she always told me that she helped Truman Capote a great deal and pretty much did all the research and helped write “In Cold Blood”. Sometimes an author has only one great book in them and for Nell it was TKAM, doesn’t mean she was wasn’t a good writer.