Aria's head turned to face the entrance as the young Jedi spoke. The Sith acolyte tilted her head to the side as if she were sizing him up for a moment, a smirk playing on her lips as she took a few deliberately slow steps closer to him. 
"Did you really think that her contact with you off world had gone unnoticed? You Jedi really have gotten cocky over the years, haven't you?" 

She could sense his anger, and his struggle to fight it down and ignore it. It amused her, to see a Jedi reacting in such a way. She could use it to her advantage, no doubt he would be easy to antagonise into a fight, then she could kill him and she would have two dead Jedi to her name. Bracknell would have trouble passing over her then for sure. 

A flick of her wrist spun her lightsaber through the air and back into a ready position as she advanced again, still cautious as she sized him up. He was taller and larger of frame than she was, but in strength she hoped they were evenly matched. Those muscles of his weren't just for show, but she had built up enough of her own she hoped that she could hold her own when they closed blades.
"Only the strong survive here on Korriban, if your sister was foolish enough to let her guard down then that is her fault and the Masters will be glad to be rid of her. That is the way of the Sith, we aren't soft and weak like you are." 

Though she was eager to fight, Aria's strategy at the current moment was to try and provoke Yerbol into attacking first, with the end goal of drawing him further into the main chamber of the tomb, so she could block the exit and prevent any chance he had to change his mind and begin retreating.