It wasn't often she came across a person who didn't appreciate having a hand in battle, but this boy seemed determined to fight them on his own. She didn't know if it was pride, foolishness, or actual skill that he was basing his decision on. She could see him slowing. He was only human after all. She could go on for a quite a bit, which is why she wasn't killing as efficiently as she had before. She could pace herself as she assessed the current rooftop population.
She'd killed quite a bit and they had seemed to be replaced with fresh bodies. The boy seemed to be handling himself quite well, however, though he was slowing down. His fatigue was setting in, she could see that, but still he had enough pride to get the job done. She was assessing him and the way he moved. His movements were clearly more learned than their opponents. She thought of responding to him, but didn't bother with it. Instead, she returned her focus on those attacking her as she kept her distance and baited them into following her.
One lunged at her, and she dropped him off the side of the roof. She heard his body hit the edge of the fire escape on the way down.