Final answer:
Katniss panics and is filled with a sense of urgency when Peeta does not respond to her whistle in Chapter 23, showing that her feelings for him are genuine and not just an act.
Step-by-step explanation:
In Chapter 23 of The Hunger Games, Katniss experiences a growing sense of panic and dread when Peeta does not respond to her whistle. This moment is critical because it signals to Katniss that Peeta may be in grave danger or worse. Her immediate reaction includes fear, confusion, and urgency to find him, indicating that her feelings are beyond a mere act designed for the audience of the Games. The complexity of her emotions throughout the story suggests that while some of their public actions may be part of a strategy, her concern for Peeta is genuine.
The true nature of Katniss's feelings for Peeta evolves over the course of the games. Initially, their relationship is part of a survival strategy, particularly as portrayed for the audience's benefit, enhancing the 'star-crossed lovers' narrative to garner sympathy and assistance. However, as they face life-threatening challenges together, the line between performance and genuine emotion becomes blurred for Katniss. When Peeta is in danger or hurt, Katniss's reactions are intense and driven by a deep sense of urgency and care, reflecting a level of authenticity in her feelings.