It does seem like something's off about the feed. Vienna can read the file, but it comes up empty. But it doesn't seem like the problem is standards non-compliance.
Other posters mentioned her IP block - I wouldn't be surprised if that was the cause since automated netnewswire traffic might easily be confused with abuse.
NNW works for every other site that has an RSS feed and someone else just commented that while it’s a valid atom feed, when they try to use it in another newsreader, they get an empty result
