Turns out I forgot the third exercise she shows, but I'm doing fine without. Monday-Thursday, when I get to my bus stop, I do 20 steps on my toes, 20 on my heels, and repeat three more times for a total of 80 steps for each. No issues since I started, except when I got back from the Philadelphia and DC trip and forgot to do them, and then had shin pain on my next long walk. Haven't forgotten since.
The only thing that sucks is that it looks silly. But I'd rather look dumb than be in pain.