Super Granny Fights Off Robbers! Hero Or Crazy?

In North Hampton, England, after robbers try to smash a jewlry store window, "Super Granny" as she is being called, comes to the rescue!  An elderly woman in her 70's came at the robbers swinging her purse as the four men tried to flee.  Some are calling her a hero while others are saying she's just plain lucky.  What do you think?  Was it a "senior moment?"