The narrative style of Catching Fire is first person narrated by Katniss. Katniss uses a very direct style with a lot of fragments, as though you are in her head.
Katniss is a blunt narrator. In some ways she is unreliable, because she goes through a lot in Catching Fire and the reader is never sure if she is completely in control of her own faculties. Katniss often gets lost in thought, and shares her emotions with the reader.
If it were up to me, I would try to forget the Hunger Games entirely. Never speak of them. Pretend they were nothing but a bad dream. (Ch 1, p. 3-4)
This raw, close narrative style contributes to Katniss’s unreliability as a narrator but also makes her a more realistic character because the reader understands her thoughts and sympathizes. She Katniss rarely shares her thoughts with others, she comes across as cold and unfeeling. The reader knows that Katniss does feel though, because she shares her thoughts with the reader. We are directly in Katniss’s head.