The Neglected Black

As Harry and Lyra Black vanquished Voldemort, those who had perished in the battle and the war came back to life. While most were informed of this miraculous event, Lyra, the daughter of Sirius Black, remained in the dark. Six months after the war, every student received a letter from Hogwarts, announcing that they must repeat their 6th and 7th years. Lyra, who had been in Ireland assisting Hagrid with magical creature research, was thrilled by the news. However, her joy turned to shock when she returned to 12 Grimmauld Place to retrieve a photograph of her father.

...

.
.

Minnie said with a guilty look for not telling her before "6 months ago just after the war"

Lyra stood still, her face a mask of forced calm. She let out a dry chuckle that echoed in the room. "Wow... six months ago, right after the war," she began, her voice dripping with irony. She glanced around the room, taking in the faces of James, Lily, Remus, and the others, her gaze lingering briefly on Harry, Hermione, and Ron with barely concealed disdain.

"Really makes you wonder if I'm actually part of this family or just an afterthought," she continued, her tone sharp but controlled, though a glimmer of hurt flickered in her eyes.

Her gaze finally landed on Sirius, a mix of pain and bitterness seeping through. "Thanks for keeping me in the dark, Dad. Truly, it means the world."