What's behind Maureen Dowd's contempt for Desiree Rogers?

Ah, Maureen Dowd:

They were both elegant and entitled swans, insulated in guarded enclaves, obsessed with protecting and promoting the Brand.

...

Tiger Woods and Desiree Rogers are perfectionist high-achievers brought low. They both ran into that ubiquitous modern buzz saw of glossy celebrity wannabes - Vegas parasites and Washington parvenus.

...

She mistook herself for the principal, sashaying around and posing in magazines as though she were the first lady, rather than a staffer whose job is to stay behind the scenes and make her bosses look good.

“Entitled”? “Sashaying around”?

A White House staffer “posing in magazines” isn't particularly unusual, as Maureen Dowd surely knows. So what is it about Desiree Rogers that prompted Dowd to describe her as “sashaying around” and thinking “she were the first lady, rather than a staffer”? She doesn't explain. Instead, she struggles to find similarity between Rogers and Tiger Woods. You know, because they're both entitled swans.