One common theme could be the development of their relationship in an awkward way. Maybe they start as strangers and there are a lot of misunderstandings at first.
I'm sorry, I don't have specific 'awkward Jenna and Colin fanfic' to recommend directly. You can try searching on fanfic - related websites like Archive of Our Own. They usually have a large collection of fan - created stories.
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.
There are various popular matty x jack fanfic stories. Some might focus on their adventures together, like traveling to different fictional worlds. For example, a story could be about them exploring a magical forest filled with strange creatures and having to solve puzzles to get out. Another type could be centered around their friendship development, perhaps starting from a chance encounter and growing into a deep, unbreakable bond.
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.