the_debt_of_time

"But Greyback's the one who turned Remus. That makes him his progeny, right? So
how can Remus be an Alpha?" James asked.
"Because Sirius and I made him one," Mia said. "We didn't mean to at the time of
course, but we did."
Shock on his face, Sirius took hold of her arm and spun her to face him. "How?"
"It's a bond. I felt it during my training while I was reaching out for Remus during
my meditations. I could feel the Familial Bond that reached out to you, Jamie," she said,
refusing to speak of the Soul Bond she felt between herself and Sirius. "There was
something else, though. An invisible string that took me to the Shrieking Shack during the
full moon, but also brought me back to the forest where I knew you two were training. It
was an unprovoked Pack Bond." She looked skyward, shook off Sirius's grip, and moved
faster as the moon began to rise.
"I know about bonds. Unprovoked bonds don't mean anything, Mia," Sirius said as
he followed her. "It basically just says we're all connected just by existing in the same
world."
"For witches and wizards, yes," Mia agreed, though she noted that Sirius was
ignorant to a lot of the details. "Werewolves are different. Regular bonds usually exist
between family members or married couples; there's no hierarchy except with house-elves,
and even then it's only one-sided. Werewolf packs have a hierarchy; it's necessary for their
survival or else they'd all just kill each other."
"What does that have to do with us?" James asked as he leapt over a large rock.
"We're not werewolves."
"Most bonds are provoked by emotions and actions, Jamie. Preparation and
provocation. Sirius and I took the first step to prepare a Pack Bond with Remus the first
night we were with him in the Shrieking Shack."
"We submitted," Sirius said, clarity written all over his expression.
"Translate?" James snapped, narrowing his eyes at them.
"Because Sirius and I are pack Animagi, we had to submit to Moony in order to
show we weren't a threat to him. Passive submission at least; folded ears and tucked tails,"
she answered. "Then Moony passively scent marked us. When Sirius and I did that, we
were recognising the potential for a Pack Bond, and in doing so, we established the
hierarchy."