Fortunately for Bil, and for all of us, my mother in law is slowly but surely getting better. She is driving again, and getting around a lot better. She can do her own food shopping now. She has a device she calls a "mallinator" which I can't find on google, but she is using it for her mall walking, and she says it works a lot better than a cane.
We are hopefully going to see her later in the week.
Of course, she is only one more fall away from disaster. But for now, we have a reprieve, some breathing room. How much, I don't know, after reading this article. Apparently, canes and walkers can be dangerous on their own, too. But, as far as I'm concerned, it is good that she is out and about, and has accepted that she needs mechanical aide. I only hope she doesn't fall again.