Regardless of how good she was at refueling:
Did she have personal experience in going places where people were trying to kill her?
Does she have experience in knowing what it's like to send men to do things that they may not come back from?
What life experiences does she have that qualifies her to oversee the training of men who must go out to kill or die, and command warriors?
All good questions.
I suspect, in her case, the answers are No/No/None.