the_debt_of_time

Umbridge stomped her foot in outrage. "I will not let a filthy little Mudblood accuse
me of―"
"If I may, Minister?" Mia asked, cutting off Umbridge's rant.
"Miss Potter?"
"I understand this must be incredibly embarrassing to Madam Umbridge." She
offered a fake sympathetic smile. "It is my understanding that the Wizengamot still follows
and adheres to the rules of ancient magic?"
"Of course," Kingsley answered and even the blood purists began nodding their
head in agreement, as though suggesting anything else was offensive to the entire Wizarding
culture.
"If she sees fit," Mia offered, "Madam Umbridge may challenge my accusations per
ancient law."
"Yes, I challenge the accusations!" Umbridge quickly spat.
"Very well, then, by the similar ancient laws, I have the right to challenge Madam
Umbridge in turn for the slander against my Houses." She set her bag down and
unbuttoned her cloak, throwing it gently into her seat. She smiled when Draco leant
forward and folded it properly for her.
Umbridge stared, clearly confused. "I never said one word against―"
"Would the collective assembly agree that they've heard Madam Umbridge refer to
me as a 'Mudblood' no less than three times in this session?"
Theo looked to Draco and smirked.
"They would," Kingsley said angrily.
"I'm sure it was an accident," Mia said sweetly, "and that Madam Umbridge is
unaware that it is illegal by ancient laws to slander a pureblood and their House by referring
to or implying that any member of a Noble and Ancient House is impure. As I am the
adopted daughter of Dorea Black and Charlus Potter, I am considered by those same
ancient laws a pureblood. Madam Umbridge referred to me as a 'Mudblood', and I offer
her the chance to either step down from the Wizengamot willingly to save herself some
dignity and accept a formal investigation or accept my challenge to rightfully defend the
honour of my Houses."
"She is not a pureblood! She is not! Adoption only―"