I'm sorry. It's even harder when you want them to try and they don't. I see it everyday where I work (at a cancer center) and it's really hard when you feel like you could really help them, but they want nothing to do with it. :/
My grandpa fell over the summer and was stuck in a rosebush for who knows how long until my grandma got back from the store. That was the first time he had fallen, otherwise she wouldn't have left him alone. He's really tall (6' 5"ish) so he doesn't have much center of gravity anymore. It was really scary, because he could've fallen and hit his head on the side of the house or on the concrete.
I guess I had known for a while that his health was declining, even after he fell, but I didn't realize exactly how bad things had gotten until he told me earlier this year that he wouldn't be able to make the 4 hour drive to be at my wedding. He just didn't have the strength or endurance to make it that far (car rides tire him out). And I know if there was ANY chance that he thought he could survive the trip, he would have. It was pretty heartbreaking because I lost my grandma (who I called Grammie) about 4 years ago and was already devastated that she wouldn't be there. :/ And now every time I go visit him (about every other month), he looks worse and worse each time. This last time, when I went for Thanksgiving he was pale and so skinny you could see all his bones...My grandma tries to feed him, but he's just not that interested in eating very much anymore. :/
Anyways, I'll stop making your post depressing now. I was happy that I still had two other grandparents who were able to be there, and of course the newly inherited grandparents from DH's side. :)
And I really like the basket idea you have. I think that's really creative, practical and thoughtful. I think she'll appreciate it, even if she doesn't show it. :)