I was just curious as it sounded a bit odd to my ears that NPR included that she didn't want her last name in the story (included in the audio version of the story as well). The first thing that came to my mind when they said this on air was that she was writing her blog while on the clock at her other job. I now see other reasons why she might not include her full name on the blog... just a bit weird that they included this info in the story.
If I wrote a blog and didn't want my employer to know I would come up with a pen name. Seems a bit stupid to go on NPR or any other nationally broadcasted media outlet when you are trying to keep it a secret from your employer.