Charlotte is well and truly bored. There is not much to see in Eimmery and the people are a miserable combination of condescending and insecure. Condescending, because Eimmery used to be a major trading hub that enjoyed great prestige. Insecure, because other cities like Sicaster have long eclipsed it in not just importance but in wealth.
Life as a personal assistant's personal assistant (because, regardless of official job titles, that is what she really is now) is also duller than she expected. Suzy Newland, Raylen's real personal assistant, is way too competent for there to be much work that can be passed on to Charlotte.
Not to mention, Charlotte is certain that Ms Newland does not trust her any farther than she can throw her.