(OOC: If you haven't made your intro yet, you still have time. I'll be letting another round of posts go by before we head to lunch. Of course you can always make your intro there)
Lexi
Lexi blinked in surprise at Mary. Why would she even say something like that about her name? It was really, really weird and Lexi felt her face redden. Luckily for her, Riley took the reins of the conversation.
"We can't partner, we're too close together in age." She said calmly, "And I'd rather avoid just jumping into a partnership without knowing you first, after all we're stuck with our partners all year. But you're certainly allowed to hang around with us for the day. Maybe after we get to know you one of us will want to be your partner."
Lexi nodded her assent, though she was still too uncomfortable to reply with words.
Natalie
Natalie stood in the back, watching. She already knew whom her partner was going to be, and now she saw the perfect opportunity to introduce herself. She strode forward to where her partner had just kicked over another girl. Said other girl suddenly lunged up towards Natalie's future partner. In response to this, Natalie extended her leg into the other girl's path, sending her back to the ground. "You shall be my partner, Miss Revynjahlsmyrl." She said, the name flowing off her tongue with ease.
It hadn't been a hard choice, Rein was clearly everything she needed in her partner. Which was to say, violent. As she had just demonstrated, Rein often resorted to violence as her first response to just about anything. And it wasn't as though the relationship would be one-sided, Rein wouldn't get very far with that attitude. Natalie had already seen the teacher start to respond to her display, she had likely only avoided doing so because she saw Natalie approach and wished to keep her job. Rein needed someone to keep her from getting in trouble, and Natalie needed someone to clean up trouble. It was perfect.