Who really is Sarah?

Right now, Sarah was on the last trial. Sweats dipping from her forehead, rolling down her nose to fall down on the ground. She was in combat position, her knees slightly bent, her fingers tightly rolled in a punch and there was a bandage wrapped around her knuckles which were stinging badly. Nevertheless, her eyes and concentration were on the target in front of her, Devlin.

He was in defense position. Sarah needed to punch him in his chest but his defense moves were too swift and he had blocked her every punch. It was the tenth time that she’d tried again but failed. This time, she was full of frustration as she couldn't do it! She started to feel irritated. Tears of frustration and fatigue started to form behind her eyes. But she couldn't cry in front of Devlin who was unfairly so rapid and too good! She couldn't do it.

Giving up, Sarah loosened her fists and slouched tiredly on the ground. Devlin was taken back by her action. He quickly appeared by her side, bending on his knees,