the_debt_of_time

"She's not far off, boys," Remus interrupted them. "Sirius and James caused the
most trouble and destruction, but Mia had a talent for producing mass hysteria at
Hogwarts."
Sirius chuckled fondly. "Remember the popcorn incident?"
"And Peeves with the butter!"
"Lads," Sirius said, looking back at the twins, "this little witch would give you both
a run for your money."
Fred snorted incredulously. "This is Hermione Granger we're talking about?"
"No." Sirius shook his head. "This is Mia Potter."
"No offence, love," George said, reaching out and patting Mia's hand consolingly,
"but I'll believe that when I see it." Both twins then stood, grinning as they made their way
back across the room to presumably tell the hilarious tale to Charlie, who was discussing
mating rituals of the Catalonian Fireball dragon with Bill.
"Ginny?" Mia looked down the table to her friend, who had spent the better part
of the evening trying to teach Teddy how to say Quaffle while Harry spoon fed him mashed
potatoes.
Ginny looked up. "Yeah?"
"Do Fred and George still keep a running batch of Polyjuice Potion at their shop?"
Mia asked curiously, instantly drawing the attention of both Remus and Sirius.
"I think so. Keep it around in case of emergencies," Ginny replied. "Sometimes
George likes to use it so they can be identical again."
"Do me a favour? Apparate over there and snag me a phial of it."
Despite not knowing what exactly Mia had planned, Ginny grinned and eagerly
stood up from the long table, making a subtle yet hasty exit.
"What are you doing?" Remus whispered.
"Making a point." Mia stared across the floor at the twin Marauder wannabes. "My
talent was called into question, Remus, and I have to defend myself, don't I?"
Sirius grinned, visibly shivering with anticipation. "Are you doing what I think
you're doing?"
"That depends. Tonks, care to help me have a go at Fred and George?"
Green eyes sparkled blue like a shiny aquamarine stone, alight with mischief. "What
can I do?"