the_debt_of_time

She smiled up at him sweetly and vanished the paper. "Tilly makes Master Remus
his favourite chocolate cake," she promised before turning to look at Sirius with narrowed
eyes. "You... is getting nothing!"
Mia grinned, her heart feeling years younger at the sound of Tilly's voice. "I've
punished Sirius quite a bit since I've returned."
The house-elf nodded in approval and gestured between Mia and Sirius. "Tilly sees
the bond. Very strong. Lots of practice," she said knowingly, offering Mia a coy smirk. When
her focus fell on Mia's hand, she smiled brightly and gasped. "And he gives Mistress her
grandmother's ring. She was a bad witch, but now a good witch wears it. Mistress brings
honour to the House of Black. Makes it noble again."
She turned to look back at Sirius, perhaps finally in approval, but her attention was
drawn to a head of messy black hair and bespectacled green eyes. Tilly let go of Mia's hand
and slowly approached, her mouth open and her eyes soft. "Oh. Harry Potter," Tilly said
the name with sweet reverence.
Harry smiled awkwardly. "Umm... nice to meet you, Tilly."
"Meet? Tilly does not meet Harry Potter," she insisted as she walked up, taking his
hand in both of hers and stroking the back of it, petting him affectionately. "Young Master
Harry was Tilly's baby. Tilly takes care of him when he was very small."
"What?" Harry said. "You... You did?"
She bobbed her head, her ears flapping with the motion. "Tilly changes nappies and
makes food even when Mistress Lily says not to. But Tilly doesn't pick up the toys. That
be Master's job. Mistress Lily says so."
Mia frowned, dread filling her. "Tilly, you know that Jamie and Lily―"
"Tilly knows," the elf said quickly, cutting her off. "House of Potter strong once
more. Has a new Master now."
Harry cleared his throat, looking like he wanted to take his hand back but not offend
Tilly in the process. "I'm not... Tilly, I'm not your Master," he said and looked up at Mia
in a panic. "Hermione, should I give her clothes?"
Mia laughed in amusement. "She'll bite you if you even try."
Harry grinned wryly.
"She's not joking, Harry," Sirius insisted.