the_debt_of_time

Mia gave him a knowing smile. She had seen the Black family tapestry with her own
eyes, and Sirius was by no means exaggerating. There never was a tree with more
intertwined branches.
"We're second cousins, I think," she said, pointing to herself, James and Sirius.
"However, considering what Sirius said about the criss-crosses in the family tree, there's a
chance it could be once removed. Maybe twice. I'd have to research a little just to be sure."
Sirius chuckled. "She always talk like this?"
James grinned, poking Mia's leg with his foot, laughing when she shoved him off.
"It gets better the farther she is away from a library or bookshop."
"Move it, first years!"
A shout came from outside the compartment, and all four inside turned to look at
the window as a tall, blond boy shoved his way into view.
"Salazar, if I knew what House they belonged in, I'd already be taking away points,"
the boy drawled.
Mia's eyes widened at the sight. There before her stood the mirror image of a
fifteen-year-old Draco Malfoy, recognisable smirk on his lips and two large boys flanking
him on either side, also very familiar. For a second, she felt incredibly out of place before
she realised that the blond boy in question was not, in fact, Draco, but his father, Lucius
Malfoy, and the cronies at his side must have been Crabbe Sr and Goyle Sr.
She felt a sharp pain and pressure in her chest at the sight of Crabbe. Though she
had watched as Lucius Malfoy had been struck down by the wand of his own son, seeing
Crabbe was more difficult as it was her own wayward curse that had killed the man during
the final battle in 1998. The first and only time the words "Avada Kedavra" had left her
mouth.
She was distracted from her remorseful thoughts as Lucius Malfoy turned his
bullying attention toward a boy in front of him.
"Prefect coming through. Out of my way!" he said as a small first year tried to walk
past him. He shoved the boy violently, and the first year collided with the door frame of
the compartment, sinking quickly to the ground, nearly being trampled by Crabbe and
Goyle in the process.
James and Sirius stood quickly, scowls on their faces at the scene, and Mia jumped
from her seat to reach the round-faced boy.