She has a reputation that 'commands' attention/respect. [=people give her respect/attention because of her reputation]
In the United States, the President as the commander in chief is at the head of the military 'chain of command'.
She seems to be 'in (full) command of' the situation. [=she seems to have complete control of the situation]
(..) He has a two-bark minimum for delivery guys... three for everybody else, but the best thing... is he doesn't do any of the standard "sit" and "lie down" commands. I taught him very special commands that only my dog could know. Like what? Like "a little to the left." - Shut up. (..)2004 TvShow: Gilmore Girls Title: The Nanny and the Professor Season: 4 Episode 10