"Hey, Bart!" Kara said cheerfully. Part of her wondered if Bart didn't really like her because he got all tense the few times they've seen each other and didn't really say a lot. He seemed nice, though, and Kara wouldn't mind being friends. Plus, he was pretty adorable.
"...I think Bart's trying to introduce us," Kara grinned at Mia, "I'm Kara."
She smiled at the girl and stuck out her hand, which she learned was pretty customary around here.