the_debt_of_time

Before Kingsley even had a chance to officially begin the duel, Umbridge flicked
her wand out and sent an Entrail-Expelling Curse at Mia that was easily blocked with a
shield.
Umbridge hissed as she missed her target, and Mia grinned at her. "Sneaky witch."
She allowed the woman to attack her repeatedly with wild motions and harsh hexes
and curses. Each time she threw up a well-placed shield, grinning calmly as Umbridge
descended further and further down an unending pit of anger and bitterness.
"Titillando!" Mia called out and, as the Tickling Hex hit the target square in the chest,
the body of the Wizengamot began murmuring to one another in confusion. Most of the
blood purists believed that Mia was out of her element, relying on defences taught to fourth
year Hogwarts students. Her friends and family knew better.
Remus was rolling his eyes. "I told Mia not to play with her."
"Fight me!" Umbridge screamed in frustration as Mia deflected yet another curse.
"I'm sorry, Dolores," Mia said calmly. "Are you having trouble getting through my
shield?"
"She's provoking her," Harry whispered to Sirius. "There are only a few curses
strong enough on their own to get through a.. ."
"Stupefy!" Umbridge shrieked, her temper rising as each and every hex, jinx, and
curse bounced off of Mia's well-placed shields, completely unaware that she was being
lured into a trap. "Stupefy! Deprimo! Reducto!" She hissed in frustration when nothing
appeared to stick.
Mia let out a taunting laugh, spinning her wand between her fingers.
Umbridge narrowed her eyes and sneered before snapping out, "Expelliarmus!"
Mia's wand flew into her hand, and the toad-faced woman gave a shout of triumph.
Harry stood and made to move but, sensing him behind her, Mia shouted, "Remus!"
depending on him to take Harry by the shoulders and shove him back into his seat.
Umbridge aimed her own wand at her unarmed opponent and grinned. "I have
waited a long time to do this," she said, her eyes manic and the grin on her face a little too
smug for her own good.
"Not as long as I have," Mia said, not looking even slightly intimidated. She reached
her small hand out, empty palm up.