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]
(..) GILLY: That's dragonglass. A mountain of it, beneath the ground. John needs to know. You must send me away. I command you to heal yourself. I command you to find the cure. So why's a nice girl on her own heading to King's Landing? I'm going to kill the queen. I invited Euron Greyjoy, (..)2017 TvShow: Game of Thrones Title: Stormborn Season: 7 Episode 2