the_debt_of_time

When Remus had turned to carry her onto the train despite her struggling, her gaze
fell upon Sirius, who was smiling softly at his two friends with an expression on his face
that looked like relief.
"WHAT?!" Lily screamed, dropping the Advanced Potions book she had been
reading to prepare for their sixth-year class. The train took a turn at that exact moment,
and the book slid beneath the seats, out of reach. "Oh, fuck."
Mia's eyes widened, and she laughed when Lily gasped and covered her mouth.
"You said fuck."
"I did not!" Lily squeaked.
"You did so, you right foul liar."
"You had sex with Sirius!?"
Mia slammed the compartment door behind her, sealing it with a Silencing Charm
in the process, glad that Mary, Alice, and Frank had all left to go visit others. "Merlin, do
you want everyone to come barging in here? The way you screamed, Jamie probably thinks
you're being tortur―" She shook her head as the image of Sirius twitching on her drawing
room floor came into her mind, and she winced. "I... Sorry, that was in very bad taste."
Lily raised a brow in concern at the sudden change of demeanour, and Mia knew
she was putting the puzzle together. Remus had admitted to running into Lily earlier that
summer; when she questioned why he was not with his friends, he had accidentally let it
slip that Sirius was in St Mungo's. Lily, despite her general dislike of Sirius, had apparently
shown concern for his well-being and asked if she could send something to him in hopes
of him getting well again. Remus confessed that Sirius was living at Potter Manor and
would be for the foreseeable future. Though no one outside the Marauders and Potter
family knew the truth of everything that happened that horrible night, it was not too
difficult to piece together.
"Forget bad taste," Lily insisted, pulling Mia away from her dark thoughts. "Or
maybe speaking of bad taste, how on earth did you find yourself having sex with Sirius
Black?!"
"Found it quite pleasant actually," Mia blurted out and then covered her mouth the
same way Lily had after swearing.
"Mia!" Lily blushed.