In Passage 2, why does the author include Vicky’s story about Miss Cameron and Nell?

to create the effect of tension

Explanation: This may not be right but makes the most sense

she was trying to use   reliable narrator.

martians or other types of aliens represent a unique fear as opposed to zombies. vampires and other types of monsters.   in most sci-fi stories, aliens come from other worlds and have different or more advanced technology.   abductions and experimentation on human bodies that involve these technologies, or the use of these technologies against human beings and the use of unknown "powers", are a type of fear that's different from that of other types of monsters.