Final answer:
Auralia chooses not to go with Nic after his confrontation with Radulf because she is hurt and disappointed by Nic's behavior.
Step-by-step explanation:
Auralia chooses not to go with Nic after his confrontation with Radulf in the arena because she is deeply hurt and disappointed by Nic's actions. The confrontation between Nic and Radulf reveals Nic's violent and aggressive behavior, which Auralia finds unacceptable. She realizes that Nic is not the person she thought he was, and decides to distance herself from him to protect herself.