Her dual saber onslaught was a technique Yerbol had seen quite a few Sith use in the battles he had endured, but the way she managed to handle them seamlessly was almost intimidating, her raw force of will seeming to be injected into her weapons. Yerbol had deflected a few of her glancing blows, but the one aimed for his neck was a different story. It was too swift for him to block both sabers, the Knight blocking one saber before getting clipped in the right shoulder by the other as he jumped backwards. Grimacing at the burning pain now shooting down his right arm, he took a deep inhale, forcing his breath out as he focused intently on his opponent instead of the pain. He would have time to address his wounds later. This Sith needed to die. 

[i]Not a Sith. A person. Remember that.[/i]

Right. He DID need to remember that. So many Sith had fallen by his hand, but he could never forget that they could return to the Light...or at least abandon the power-hungry ways of the Sith and attempt to think of others as actual people rather than rungs in a ladder to ascend to power. He couldn't afford to be hypocritical and dehumanize his assailant...even if she was responsible for the death of the only family he had. 
"You say that Lysa divulged information to the Dark Council? That she was a Sith?" He snickered as he circled around the tomb again, silently cursing the small battleground. It was hard to track her, let alone try to get in a decent attack without slicing through one of the supports of the tomb. He glanced quickly at Lysa's body, a grimace forming as the possibility of Lysa actually turning to the dark side began to sink in. No, no she would never do that. It was just this Sith manipulating his emotions. He needed to stay calm, in control.

Of course, that didn't mean he couldn't toy with her emotions. 

"Why did you kill my sister? Was it because she got in your way? Was it, and I think this is the answer, because she scared you? She represented everything you could ever strive to become and you wanted to eliminate your fear through violence." His hands trembled slightly, the emotions he was attempting to keep in check bubbling to the surface, which led to a rash decision. 

He darted around the grave and thrust his saber forward, hoping the direct attack would at least deliver some damage. The thrust quickly turned into two overhead slashes, one of which connected with the support the Sith had been using for cover. A grinding noise could be heard, the tomb shaking as another support crumbled due to the lack of balance.