Her never Trump position cost her her Senate Seat because it surpassed her own vote turnout so she lost by a narrow enough margin that the lost votes cost her the election
Do we really want to put a woman who is bad at strategy that she shot her own Senate election campaign right between the eyes in charge of our strategy for national defense
Her campaign was a one woman Blue On Blue self fratricide operation that hurt Trump, the Republican Party and killed her Senate career.
She needs to spend more time with her family.
She also voted for the Gang of 8 bill. We need someone who is really qualified to be SecDef. The position is too important for token appointments.
More importantly, her refusing to embrace Trump probably cost Trump New Hampshire, so she lost it for both of them.
She did garner more votes than Trump or Clinton, but both her and Trump may have won if she had united with Trump.