Why does the author have Katniss get close to Rue? What purpose does Rue serve for the author?

Cameron, who has an extreme and unreasonable suspicion of other people and their motives, suffers from paranoia which is a psychological disorder characterized by delusions of persecution or grandeur, was absolutely sure that someone was following him even though he was absolutely alone and hadn't seen a car for miles and miles.

List some things u like to do with close friends(bff)

List some things you like to do with ur close friends and everyday friends(school)