I have mixed feelings about this story. I did appreciate how it built up the horror of the situation, but I kept wondering if her reaction was entirely believable - I certainly know I would have reacted differently. Because of this, it became tough for me to seperate how I would have reacted with how she was reacting. Ergo, I can only conclude the characterization was a little thin.
It was tough not to think: Call the press, dummy! You're rich! They're gonna write whole new science books about this!
But then... The ending ruined it for me. An original idea, turned into a dull archetype. I was not aware the grilles of Toyotas were made out of silver.
The concept, however, recalled to mind certain experiments by Vladimir Demikhov (
http://en.wikipedia.org/wiki/Vladimir_Demikhov) involving the heads of dogs. There are videos on youtube (for which I will spare you the links) but I should warn you: this is another case of reality being far more horrific than fiction. (FYI - I am pretty sure the video showing a severed dog head still alive with only the aid of machines is Soviet propoganda - the others seem legitimate).
EDIT: Forgot to mention, EXCELLENT reading!!! Loved it! One of the best so far.