(Just don't make her too serious and enjoy using her XD)

"First. We're gonna outline the little battle field. The point is not to destroy your surroundings while to fight." Hibiki explained calmly. "Go for as little collateral damage as possible and kick your opponents ass." Millianna chimed in simplify it to drive the explanation home. "Right. Now. First Nova and Toya will fight Reiji and Kris." Lisanna announced calmly. "Both teams meet in front of me." Chelia then called out. And with that the teams were face to face. "Now. When I say fight. You go." Chelia said as she held up her hand. "Fight!" 

(Just pretend to be watching a fair somewhat close match with Nova and Toya doing just a little better than the other two. And maybe have Yuuki cheering for Kris but a little disappointed that he's losing.)