"Oh, Mermish. That's really cool," Charlie replied to Derf in a hushed tone, not really familiar with it but able to draw conclusions anyhow. In the context of the situation, seeing as they were by the lake and her friend had been talking to the professor, Mermish was likely the mermaid language. It made complete sense, actually. Unfortunately, she only spoke English, but maybe Hogwarts would be the place where she'd expand her lingual horizons.

Charlie smiled back at Zoryn, and determined that she was in the presence of very spirited individuals. There was nothing bad about that, though. She just wasn't quite on the levels of her two friends.

The nice lady professor started speaking to the class as a whole, and Charlie was relieved to find that she'd gotten her name right. It would have been embarrassing for otherwise to happen. She was even more relieved- quite excited, actually- to hear that she'd already earned some house points, just for not touching the stone. She was off to a pretty good start!

The professor was right to assume that she and they wanted to know the why's of their setting. The straw mats made sense, because they'd need a place to sit that wasn't the bare ground. Sitting on the bare ground would likely dirty up their trousers. The stone piles, however, were a bit more of a mystery. Charlie figured they'd somehow be using them to manipulate the water to predict the future, but how exactly she couldn't conjure up.

The professor's question also threw Charlie for a loop. She had little knowledge on Divination in general, much less the water variety. Well, she had to try to give a fact anyway, didn't she? Right. "Um.... With Water Divination, you use different methods to manipulate water, and you determine your readings from the patterns of the ripples, or, waves."

Well... at least it sounded right.