I recently finished reading The Fault In Our Stars and the plot centred on two people needing to know what happened after their favourite book ended and trying to find out from the author! If you were that author (of a stand-alone book, not a series!) would you be able to answer their question? And, as a reader, would you ever want to ask?
Well I will be completely honest here even though it would be easier to write another answer. I was asked about the fate of two characters I created. I was not prepared for that type of question and I just said "They both died!" Well, the answer satisfied the person who asked me the question so that was that!