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.
Sharon Marshall in the Sharon Marshall story is likely a real - life individual. She might be someone who has had a life full of events that are of interest. Maybe she was a person who lived in a particular community and her story reflects the culture, values, and challenges of that place. Her story could be a way to understand the human condition in that context, whether it's about love, loss, or personal development.
As we don't have much information about this specific story, Jenna could be a protagonist who is a slave. She might be a symbol of the resilience of slaves in the face of the cruel institution of slavery.
They might be real people known within a specific community or group. Maybe they are a couple or friends who are well - known for their unique story, which the speaker feels is relevant to their own story.
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.