Don't get me wrong, I think the Bush administration has messed up big time with this disaster. Before I pass judgement on any such quotes, I usually like to do 2 things. 1) Check the reliability of the source and if they have an agenda. As you must be aware, the newspaper publishing this 'The Nation' has a strong unashamed liberal slant. They are obviously going into this with an eye to a hatchet job. Before you swallow their article in its entirety, I urge you to visit their website (
http://www.thenation.com/) and peruse the rest of their articles. You might have a good laugh. 2) I would generally prefer to see the whole transcript in case it had been quoted out of context. If she had indeed be so callous, I'm sure some of the more mainstream news would have picked up on it, and she would be entirely deserving of whatever criticism she gets.
Cheers.
Edit: I would add that it is too easy to pass judgement on people based on a single quote. One needs to be circumspect about doing that, particularly if one does not know much about that person. In this case, the article is asking the reader to make a value judgement on GWB based on a single quote by his mother! Pretty far-fetched don't you think?