1. It was my mother who ruled the roost at home. CIDoI
2. The reason is, I think, partly that in this particular society men rule the roost and women have a low status and few rights they can directly exercise. BNC
3. When their mother died in 1890, the eldest daughter, who was by then thirty years old, was allowed to move to the first floor bedroom, and from then on she ruled the roost. BNC