Maybe Cavanaugh is a critic who has written about 'Pulp Fiction'. Critics often analyze the movie from various aspects such as its narrative structure, the use of violence, the dialogues, and how it has influenced the film industry. If this is the case, Cavanaugh might have offered some unique insights into 'Pulp Fiction' that set his analysis apart from others.
Jenna is likely the main character in the story. She could be a young girl, a teenager, or even an adult. Since the story is named after her and the black cat, she's probably the one whose experiences are central to the plot.
Perhaps Cavanaugh was involved in the marketing or promotion of 'Pulp Fiction'. This could include coming up with creative advertising ideas, arranging premieres, or helping to build hype around the movie. But as of now, there's no evidence to support this, and it's just one of the many possibilities given the lack of information about who Cavanaugh is in relation to the movie.
I don't know what you want to know about Jenna's novel. Please provide more background and context information so that I can better answer your questions.