Just because a woman has passed her golden anniversary doesn't mean she's ready to leave life behind. If you want to get a 50-year-old woman a gift, it should be something that reminds her of the promise of adventure.
How about a cookbook filled with colourful, exotic recipes from around the world? Or perhaps you could send her an art appreciation tour of museums, galleries, and artist workshops. Maybe a book about decorating would catch her eye if she feels like staying home.