Why does Sofronia order Don Pasquale’s servants to hire more staff?

In the opera Don Pasquale, the character Norina—posing as the shy "Sofronia"—orders the butler to hire more staff simply because she deems the current household staff of three to be insufficient for her new status as the lady of the house.1

After dropping her initial demure persona, she asserts her authority over Don Pasquale, doubles the butler's wages, and begins a campaign of extravagant spending to torment the old man. In addition to demanding more servants, she orders the acquisition of new furniture, two carriages with horses, and the services of a wigmaker, dressmaker, and jeweler, all at Pasquale's expense. This behavior is part of the scheme devised by Dr. Malatesta to drive Don Pasquale to such desperation that he will eventually agree to let his nephew, Ernesto, marry Norina.12