I've thought recent publicity shots for FW have made her look old in the face too, at least relative to her age. Sometimes, unfortunately, inherited genes aren't kind, and there's little you can do about how 'old' you look if that is the case. But I believe Honeysuckle Weeks might smoke too in real life which really does put years on a woman - some more than others, obviously, but if you're also battling family genes which 'age' you more quickly you really don't want to be making it worse with something unnecessary!
Yes, I thought that as well.
When the last series was on three years ago, she was much fuller in the face, so perhaps weight loss or as you say JP, smoking, has made her look older.