"Sorry I didn't warn you sooner." Fly, fly, back to reading her intro to engineering book. The relatively little math involved in this introductory book is not that tricky, especially since thermo-kinetics involves a lot of math already. Calculus is confusing, though.

And then they are at the city. "We can fly in without annoying anyone, this time, you're registered properly." She navigates to the civil services building.