I don't know much about her and why she's leaving, but I do remember her from two years ago or something when she announced, with quite a fanfare, "The Machine". I was excited about that, and even bought HP shares as a result.
Not long after that, HP stepped down from most of their ambitions with this thing[1]
I don't know if that explains Whitman's departure, but I would not be surprised if that was taken into account.
1. https://www.extremetech.com/extreme/207897-hp-kills-the-mach...
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