What is the author's tone in Jane Austen's Letters by Jane Austen?

The tone of the book is subjective. Published in the epistolary form, the collection of letters conveys the personal correspondence between Jane Austen and others, primarily her siblings. The content of the letters is very subjective in terms of providing her opinion of people, places and occurrences to those in her inner circle. The letters also provide evidence of her lifestyle as regards her attendance of plays and her references to fashion of the time. Most of the letters are written by Jane Austen, limiting the access to others' opinions, except as mentioned in Jane's writing.