As the remaining men were just small fries, Elise going all out to kill them was a waste. It was equivalent of using a catapult to kill a fly.
So instead of doing that, Elise came up with a better idea. She wanted to imitate her beloved mistress and vent a little bit of her frustration on these unknown attackers.
As she had already captured the two official knights, there was no need for her to keep the remaining weaker attackers to be alive. They would definitely not have any important information that the official knights were not aware of. So she was planning to kill all of them.
But simply killing them was not good enough. Instead, she wanted to experiment some new moves on them. Just like how her mistress always did.
As for the moves that she was planning to practice, they were not weapon skills. Weiss had given weaponless hand and feet combat extreme importance. So all the knights under her needed to learn some kind of bare handed martial arts technique.
