She didn't know what it was about Diana that seemed to just work when she talked to people. Either way, whatever she was saying seemed to be working against Prime. Kara glanced to Diana, though she was still floating beside Superman. She was less worried about getting herself killed now, with three of them here, there was more chance they could stop Prime if Diana wasn't able to fully calm him down. But that was just a last resort.
Her hands crossed over her chest as she let her gaze flick back and forth between Superman-Prime and Diana, waiting to see what happened. Obviously Diana was much better at this than her. She never was good at the talking people around thing.