She could well have written in third person. She was watching herself dying slowly, separating further and further from her life. If it felt like I was already dead towards the end, I might just run with it when writing my life story. Just leave a few fill-in-the-blanks for details like the date and ceremony details for hubby to fill in.

The title is close enough. Censored, missed a comma and skipped the secondary title. Very human choices and mistakes. Not sure why we'd expect a dying loving woman to be hyper focused on getting the title of her book right.