The third-person omniscient narrator appears when the one who is telling the story knows the thoughts, opinions and feelings of all the characters who are in the story. This is the reason why the story that Ben is reading is narrated by a third-person omniscient narrator.
Um, you need to write a easy of how you think the person would response to your questions, people on the internet can't help you get this answer because... we have to read the book.
Sorry, but with out any info I can't even help you