It was her turn to be quiet.
Look, I'll be quiet as a mouse and cause no trouble.
Maybe now things will be quiet enough so I'll have time to contemplate all those high level philosophical concepts.
He declared to Northumberland, the kinsman and master of Thomas Percy, the conspirator, "as for the Catholics, I will neither persecute any that will be quiet and give but an outward obedience to the law, neither will I spare to advance any of them that will be of good service and worthily deserved."
Then there's this house, which must be built in order to have a nook of one's own in which to be quiet.