According to CNN who created the story for ratings, aka money.

I like the fake story that CNN made up in Mexico where they said there was a little girl trapped in the rubble of the earthquake and all they could see was her small fingers. The rescuers worked through the night trying to save her, faithful CNN watchers were glued to their TV sets, ratings were through the roof. It all came apart when the Mexican government said, this is all fake! CNN is making this up for ratings, it never happened. Darn! 

I'm sure CNN is dreaming up something else.