Final answer:
The cat lady's 5-year-old daughter may have cat-scratch disease (CSD), which is a bacterial infection transmitted through cat bites or scratches. Antibiotics and good hygiene practices are the main treatments for CSD.
Step-by-step explanation:
The cat lady's 5-year-old daughter presents with fever and lymphadenopathy. Based on the symptoms described, it is possible that she may have cat-scratch disease (CSD). CSD is a bacterial infection caused by Bartonella henselae, which can be transmitted to humans through cat bites or scratches. The bacteria can infect the lymph nodes, leading to the swelling and tenderness observed in lymphadenopathy.
To treat CSD, it is important to seek medical attention. A healthcare professional may prescribe antibiotics to help alleviate the symptoms and clear the infection. It is also crucial to practice good hygiene and avoid further exposure to cat bites or scratches.