Ramona’s answer to “Is there any questionable content in this book? And would it be appropriate for a 13-year-old?” > Likes and Comments

just two quotes from the book:

"there had been increasing concern over her class discussions. Certain subjects and authors continued to be deemed inappropriate; Adeline
on the other hand did not think it was for a village to decide which of the
classics counted. That job, presumably, had already been done, by people
much more learned and wise than any of them."

"As she had learned from Miss Lewis in school, Austen’s father had
enjoyed a library of hundreds of books in their parsonage home in the
village of Steventon, and young Jane had been encouraged to read anything
and everything she found on its shelves. Miss Lewis similarly believed that
there was no such thing as a “bad” book in terms of content: her mantra to
both the class and the trustees was that if something had ever happened
before in real life, then it was completely fair game to put it down in print.
In fact, it was demanded of it. Miss Lewis was convinced that young Jane’s
being allowed to run rampant among fairly “adult” material had informed
her gift for irony at an ideal age, giving her years of juvenile writing to
perfect it."

I did not find that there was profanity. There are some incidences of a man trying to display his dominance over woman, but in the end that is resolved nicely. I think it could be appropriate for a mature 13 year old, but there are other book about and by Jane Austen that are probably better suited.