Someone Else’s Characters

In between visits to someone in the hospital, I managed to watch the BBC production of “Death Comes to Pemberley” on PBS.

PemberleyI have not yet read the P.D. James book on which the production is based.  But, I’ve read Pride and Prejudice about 6 jillion times.  I don’t think the characters acted the way they would have had Jane Austen still been in charge.  Thoughts?