The correct answer is that the premise of the queston is wrong. "Allowed to keep," as if the money belongs to the government and they are allowing people to keep some.
The correct question is: "How much money should the government be allowed to take for the people that earned it?"
Whatever. She can’t answer simple questions. She cannot interact with her environment in these debates. She has a perfectly pure answer for every question and will not give people insight into how she weighs her thoughts when confronted with subject matter that might require shades of gray thinking.