I'm really happy for her. Worst CEO has typically been a male dominated category. It's nice see some diversity in lacking empathy and having over inflated egos.
In my book, the unsurpassed champion is Marissa Mayer. She was a product manager at early Google who dated Sergey and was promoted to VP. One of her accomplishments at Google was choosing the palette for the Google logo using a data-driven process. Based off of this success, she was made the CEO of Yahoo!, which she promptly proceeded to drive into the ground.
From the outside looking in, it appeared Yahoo! was a ghost ship, sailing under previously established momentum with no wind in the sails. Piecemealing Yahoo! out Gordon Gekko style might have been the only realistic future to save groups/units that could operate without the mothership, so to speak.
The spending/acquisition spree Mayer went on... I'm not certain what to make of that, however.