everyones mind really went to a death flag and not the possiblity of the relationship being cut short, simply because dark haired girl just wants to give her an idea for another book--meaning she might only want to be with her until she can write something to completion?
really? lol.
and yes like someone else mentioned too, that comment could just be a call back to what was written in the novel.
also--why didnt she just take the papers back >.>...