It was quite against my wishes that she came, but she is a very excitable, impulsive girl, as you may have noticed, and she is not easily controlled when she has made up her mind on a point.
Vino en contra de mis deseos, pero es que se trata de una muchacha muy excitable e impulsiva, como ya habrá notado, y no es fácil controlarla cuando se le ha metido algo en la cabeza.