You are wrong...
It was more like:
Original post: "A SPEEDING DRIVER KILLED MY DAUGHTER WHEN SHE WAS ON THE ROAD SO DON'T SPEED"
Your response: "BE A RESPONSIBLE PARENT"
Ok, so what exactly was the point of the story? To me, the message was "don't speed". It was a story designed to touch the hearts of people and to make them realise that it isn't worth the risk of speeding, because sometimes accidents happen and if a child just happened to walk out in front of your car and you weren't able to stop in time because you were speeding then you would have to live with the guilt for the rest of your life.
The message was aimed at drivers. It said, very simply, "don't speed".
If it were a story of a parent having lost their child due to irresponsibility then fair enough, discuss that issue.
The story was about the speeding driver, not the irresponsible parent. Get it?
EDIT: Just also want to add that the story says the girl was killed by a speeding car. How do you know she was on the road? That assumption was made for some reason... and considering the discussion about irresponsible parenting was based on an assumption then yes the topic was definitely turned on its head.