the_debt_of_time

"While you're there, you will set up separate accounts for your sister and Sirius―"
She glared at Sirius when he attempted to argue. "Do not interrupt me, young man. I'm
well aware of the grand sum of your vault, but you are my son, and you will not deny me
the opportunity to give you what I want."
Sirius wiped his hand angrily across his eyes and muttered, "Yes, Mum."
"James, I want you to work hard on your N.E.W.T.s this year, and do your best not
to harass this lovely young witch." Dorea gestured to Lily, who flushed pink under the stare
of the intimidating woman. "I know it's difficult because she is so very pretty. It's time for
childish behaviours to be put to bed."
"Yes, Mum." James nodded, looking reluctant to let go of her hand when Dorea
beckoned Sirius forward.
"Sirius, you will stop blaming yourself for everything that happens. Whatever guilt
weighs on your heart is putting you in danger. You're a Gryffindor and one that is far too
emotional and reckless. You are the heir to the House of Black, and one day, I expect you
to take control of it, cleanse it properly, and rebuild it. Even if that is by marrying a good
woman, giving her your name, and letting her do the cleansing for you." She squeezed his
hand tight and smiled when he leant down to hug her.
"You take care of my children," Dorea whispered in his ear, likely unaware that
most of the teenagers in the room could hear her thanks to their Animagus traits. "Promise
me."
"I'll keep them safe," Sirius swore. "I promise." He bolted from her side quickly
before he started crying again.
Mia noted that he returned to Lily's side without a pause, leaning against her,
shoulder to shoulder.
"Mia." Dorea held her hand out to her daughter.
Mia shook her head, refusing to stand. "No."
"Stubborn little witch," Dorea said affectionately. "You're to become the Lady of
the House, representing both Potter and Black. I expect you to follow the rules that come
with the life you've been given."
Mia's eyes rose up in shock to meet her mother's stare.
"Follow the rules—to the letter."