Same law that covers this.
All he had to do was SAY LOUDLY, “Ma’am, you’re walking on the wrong side of the road, please for your safety, go to the other side”, thank you!
BTW: Is there a law about which side of a road one should jog on?
In our state pedestrians are to walk on the left, facing oncoming traffic. Which leads to the question which side of the road was she on, and was it really the wrong side.
Same law that covers this.