Cassandra smiled, perhaps a bit wickedly, bringing her blade down to block his strike, twisting her body about so he couldn't hit her as she blocked. This was a good fight, she thought, and one she hoped she wouldn't lose. She kept herself calm, or tried to, but there was a side of her that she just couldn't suppress, no matter how much she wanted to. 

And right now, she didn't want to. 

"I know you" She said softly, as she moved to attack, bringing her blade up, and around her body to slash at him, using most of her strength in an attack to, when he blocked make it hard. 

Oliva watched this fight, ready to intervene at a moments notice, and stop the fight from becoming too...vicious.