Anyway, it's useful not only in the fact that she will be able to listen to the radio while walking which will prolong her life. But, and I don't know if you can read it, in the yellow banners at the top right and left underneath the radio it says that it comes with a free walking guide.
I guess that's just in case you've forgotten how to do it, this will get you right back in the groove of it. Now she doesn't have to ask a perfect stranger, she can just read up on it. See how much I love my Mumsey?