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]
(..) We'll camp here. This is no place to camp. A woman does not give us orders. Not even a Khaleesi. We'll camp here. Tell them Khal Drogo commanded it. You do not command me, Khaleesi. Find Mirri Maz Duur. Bring her to me. The witch? I'll bring you her head, Khaleesi. (..)2011 TvShow: Game of Thrones Title: Baelor Season: 1 Episode 9
(..) Margaery's safety is paramount. You don't like Margaery, do you? Whether I like her or not is completely unimportant. Margaery is the queen. Queens must command respect. Kings even more so. Not just for their own sake, but for everyone's. The High Sparrow has no respect for kings or queens. (..)2016 TvShow: Game of Thrones Title: Book of the Stranger Season: 6 Episode 4
(..) ' You temp-temperous witch! Mr. Hotchkiss, your mother is my dearest friend here. Do please hurry. And so... adieu! Which, translated literally from the French, means: "To command before... God"! I have Joe Napier on Line , Mr. Hooks. He said it can't wait. For God sake, Joe, (..)2012 Cloud Atlas