Well they assume that Margaret Hassan, the Human Rights worker from Care International has already been executed by her captors.
The Arab News had this:

Perhaps Margaret Hassan’s captors had learned a grim lesson: Kill an American soldier and the West receives a body count. Kill an Iraqi as collateral damage and almost no one notices. Kill a Western woman and the world will hear about it. In the cynical world of the media — of which this article is a part — their vicious approach may yet have some effect.

And in the interconnectedness of all things, where no man is an island, are we not all therefore to some extent responsible in some degree for her brutal and pointless death?

[Read more on her here,
here, and here]