The contradiction in the title is the engine of the drama. The use of the word "dumb" serves a specific purpose: it lowers the stakes to create a dramatic gradient. If a character starts at the bottom (a hated, foolish wife), the ascent to the top (a respected Queen) feels earned and satisfying.
The success of the "Hidden Queen" narrative speaks to universal themes of justice and empowerment. The Satisfaction of Revenge his dumb wife is a queen dailymotion