No. Writing erotic fiction about a real person without their consent is highly unethical. It violates their privacy and can be considered a form of sexual harassment or exploitation. Everyone has the right to be respected and not have their image or name used inappropriately in such sexualized contexts.
There could be legal consequences. If it is considered a form of slander or invasion of privacy, the creator could face lawsuits. Socially, it would be widely condemned as inappropriate and disrespectful behavior.
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 could be significant damage to the victim's public image. It might also lead to a loss of trust in the community towards the creator of such offensive content. In addition, the person who creates this type of false and inappropriate 'fiction' may face public backlash and isolation for their unethical behavior.
No. Creating or spreading such fictional nude stories about someone is completely inappropriate and unethical. It violates a person's privacy and dignity.
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.