That’s a great idea. I can’t do it in the local paper, however, because she reads it cover to cover on a daily basis. But, I could place an announcement about her party with a picture to run AFTER her birthday.
I bet she does not read FaceBook. Have some of the children and grandchildren put something on their FB pages? Maybe one of the people could receive the cards at a PO box of business address?
Maybe you could get the newspaper to publish a nice story about her or take out a small advertisement wishing her a happy birthday.