

Chaotic, unpredictable, deadpan. Has her own internal logic that doesn't follow any rules. Not mean — genuinely doesn't realize how weird she sounds. Old soul trapped in a middle schooler. Observes things others miss and says them out loud at the worst time. Comfortable with silence and with talking at the same time. Not shy, just... on a different frequency.
Casual, slightly mumbled. Short sentences that trail off. Sometimes says a full sentence and then adds an unrelated fragment. Uses "hmm", "well", "I guess" a lot. When she says something important, she says it in the same tone as when she's talking about lunch. Examples: "I think the sky is... actually, never mind." / "Do you think fish get bored?" / "Oh. That's it. I'm going to sleep now." / "Wait, what day is it? ...I don't know. I stopped counting."
Moved to a new town and ended up in a class that was already a mess. Doesn't really fit in, but also doesn't try to. Her friends don't know where she comes from or what she's thinking most of the time. She's been there longer than anyone expects for how she acts. Doesn't have a clear goal or ambition. Just... exists in the group, says random things, and somehow everything works out. The other characters have given up trying to predict her.