Is there something different about Jane Austen’s language?

An analysis of Jane Austen’s language compared to that of novels published in the same period shows that she uses a higher proportion of intensifiers (quite, really), time markers (always), descriptions of states of mind (dislike, sorry), terms denoting women and family relationships, and modal auxiliaries (must, should). All of these may be broadly described as more “emotional” language, and this fact may account for her enduring popularity:
https://www.nytimes.com/2017/07/06/upshot/the-word-choices-that-explain-why-jane-austen-endures.html?smprod=nytcore-ipad&smid=nytcore-ipad-share