The girl is a very strong and smart girl despite being deaf. She made decisions that actually helped her in the end. One wrong choice could lead to her death. Why is it thrilling? because the deaf girl cannot hear anything from her surroundings and a psychopathic killer is chasing her. If she was in your place then imagine the amount of fear she can get without the ability to hear or speak.
She manages to keep calm all the time, that’s why she managed to get away from him. Not only the deaf girl but also the psycho is incredibly wise and smart that he can manage to turn what was happening and manipulate the people from his lies. The ending where he can’t change the situation was the best thing ever. It also shows that people only believe what they see. The people thought she was crazy but she was just trying to ask for help.