1) Danny and his dad were on his way back to their house after a hockey practice.
2) Danny thought he saw a dog outside in the frigid weather and knew something wasn't right and made his mom go and look and see if it was okay.
3) Danny is being call a hero because he saw the strange figure and made his mom go over and look at it. And when his mom went over a and saw the old lady they called 911 to save her. If he a had just ignored the sight of the figure in the cold the lady might have died.