splendid. (I do, however, find the title a bit patronising).
By no means did I mean to be patronizing, full apologies if I was! So many times someone has asked me how old my grandma is, and when I say 93 they immediately assume she's frail, or sick or who knows what. It makes me mad when people do that. This lady has more spark than a lot of people I know, young and old, and a better sense of humor too! :P
Lovely portrait. She looks very awake and bright. To me it feels a bit unnatural that there is a large depth of field but her nose, cheeks and chin seem out of focus. Maybe should have moved focus a bit more to the front or use a more narrow depth of field?