She wants to throttle Luthor, too, right now, and her temper is quick to rise, but she keeps herself in check... for the most part. Luthor has something they probably could use to get ahead. If they can use it without getting stung later, taking it would give them an advantage.

And there goes her former teammate anyway.

"Slobo," Cassie speaks up, frustrated, "I'm all for treating people fair but that was completely different. Right now you're just adding fuel to the fire. If we're lucky, we can all have this argument later."