I think the attacks about her staffers etc. are only coming secretly from the Trump/R-team or other candidates to smear her, unless proven otherwise.
It could also be some disappointed staff members of her, who quit once because of personal reasons but not because of Klobuchar's behaviour against them and now are out for revenge ...
She couldn’t find a campaign manager because she’s so abusive to her staff.
Three people rejected the opportunity to
lead a presidential campaign because she’s so terrible.
