The soft fear the hard, the hard fear the ruthless, and the ruthless fear those who disregard their own lives. Wufu's current demeanor embodies the ruthless, even to the point of being those who throw caution to the wind. Just the look of icy frost on her face alone was enough to terrify others.
Villagers are chatty by nature, typically engaging in squabbles and spats. Unless someone's brain suddenly short-circuits, very few resort to drawing knives.
Take Baozi for instance, he's a crude and irresponsible man who can't keep his mouth shut, even prone to stealing chickens and groping dogs or harassing young women, yet he has never committed acts like murder or robbery. Such deeds are a matter of life and death, and even he dares not cross that line.
But the intensity in Wufu's demeanor, though she had yet to kill anyone, made people feel a chilling caution in her presence.