Princess, She Had No Choice but to Raise Her Sword and Proclaim Herself Emperor

[Strong Female + Loyal Dog + Machiavellian Strategy + Growth], the female protagonist must take revenge, and the male protagonist is deeply in love and unable to restrain himself. At the beginning, a widow took two children, fled from the war in the north to become the queen mother in the imperial city, raised a large number of soldiers privately, disbanded brothels, and controlled floods and plagues... Step by step, she ascended to the throne in one fell swoop.