Depends on the content. Even though marked ‘Confidential’ and are restricted, they are not Secret and Top Secret...unless they were mismarked, changed, etc. Time will tell...
While the NDA referenced in the article is for SCI, that does not remove the Hildabeast’s responsibility to protect classified information. That is an obligation one incurs simply by being granted a clearance and access. Not to mention that while each email stand alone may be confidential, the sum of multiple emails may put enough information together for an adversary to derive a more general picture of a higher classification.
She should be behind bars.