I'm sick because I ran around a palace made of ice without shoes.

[She means to tease. Because the day she doesn't tease her friend is...never.]

I've only been sick once before. I couldn't really afford to because psychic powers and fevers don't really mix well. [She taps the side of her head as if to say, yes. Powers that are controlled by the brain + fever that affects the brain = DISASTER.]

And our powers growing this much...my body can't handle using my powers at full force for more than twenty minutes.