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]
(..) Pembry! Boyle! Oh, God. Go. - Clear. - Command post. Two officers down. - Lecter's gone, sarge. - Prisoner is missing. - Boyle's gun is gone, Sergeant. - Repeat: Lecter is missing and armed. (..)1991 The Silence of the Lambs
(..) - No, angel. They all got away today. FBI. Hands up. Don't move. Turn around. Hands behind your back. Thumbs up. You're dead, Starling. Johnson, good entry, good command. Starling, where's your danger area? - The corner. - Did you check? - No. - That's why you're dead. (..)1991 The Silence of the Lambs