Chapter Text
Amaryllis Potter did not remember the cupboard as clearly as she remembered the mirror.
The cupboard had been dark and small and full of things that were not hers.
The mirror had been magic.
Not real magic—at least, not at first.
Just a one-way pane of glass in the back room of Westfield Community Centre. On one side: a forgotten storage space with stacked chairs, old posters, and a blue gymnastics crash mat nobody used anymore.
On the other side: Studio Three.
Light.
Music.
Applause.
Amaryllis had found it the night she ran.
She had been five, barefoot, small enough that the world simply… overlooked her when she needed it to. That was the first bit of magic she’d ever done on purpose. She hadn’t known words for it. She had just thought very hard, Don’t see me. Please don’t see me.
And the world had obliged.
Eyes slid past her. Attention drifted away. Doors didn’t creak when she pushed them. She walked and walked until her feet hurt and her stomach growled and the lights of the community centre glowed warm against the dark.
The back door hadn’t quite latched.
The storage room had been unlocked.
The mirror had been waiting.
She’d curled up on the crash mat that first night because it was softer than concrete and because, through the glass, she could see fairy lights strung along the studio ceiling.
In the morning, she woke to music.
And everything changed.
The dance teacher clapped her hands.
“Again! And this time, believe you can do it!”
A little girl wobbled through a pirouette and nearly fell.
“That was better!” the teacher cheered. “You tried!”
Amaryllis pressed both hands to the mirror.
No one shouted.
No one snapped.
No one told the little girl she was a burden.
They smiled when she messed up.
They helped her stand.
Amaryllis watched every class that week.
Ballet on Mondays. Contemporary on Tuesdays. Tiny tumblers on Wednesdays. Teen gymnastics on Thursdays. Saturdays were advanced training—back handsprings, aerials, vault work.
She soaked it in like sunlight.
And then, when the building went quiet and the lights dimmed and the caretaker locked up—
She practised.
At first, she only copied stretches. Quiet splits on the crash mat. Wobbly cartwheels in the narrow storage space.
Then one night, heart pounding, she slipped into the studio itself.
“I can do it,” she whispered, because that was what the teachers always said.
She ran.
She cartwheeled.
She fell.
She giggled into the sprung floor because no one was there to scold her.
Magic shimmered around her sometimes when she leapt—just a little. A fraction longer in the air than she should have been. A softer landing than physics allowed.
It felt like being caught.
Magic, she decided, liked encouragement too.
So she encouraged it.
“Good job,” she’d whisper when a jump went right.
And it would glow warm in her chest.
By seven, she had built herself a proper nest in the storage room.
The crash mat was her bed. Folded blankets “borrowed” from lost property made it soft. She found a kettle someone had thrown out and fixed the wiring after watching a maintenance man once. She labelled everything in neat handwriting because order made things feel safe.
She was never reported as missing and so went to school every day.
Clean. On time. Homework finished.
Without Vernon’s booming voice or Petunia’s sharp corrections, her mind bloomed.
Teachers smiled at her answers.
They said, “Excellent work, Amaryllis!”
They put gold stars on her pages.
She collected praise the way other children collected stickers.
Trying meant succeeding.
Succeeding meant smiles.
So she tried at everything.
Reading. Maths. Science.
And at night—
Round-offs.
Handstands.
Back walkovers under the soft glow of emergency exit signs.
Sometimes she imagined the dance teachers could see her through the dark and would clap.
“Beautiful lines!” she’d whisper to herself, toes pointed carefully.
She was happy.
Not loudly.
Not extravagantly.
But brightly.
Like fairy lights behind glass.
On her eleventh birthday, the first letter arrived.
It slipped under the storage room door in a swirl of parchment and possibility.
Amaryllis blinked at it.
She hadn’t heard the post.
The envelope was thick, creamy, addressed in green ink:
Amaryllis Potter
Back Room
Westfield Community Centre
Her heart skipped.
“That’s new,” she murmured.
She turned it over.
A wax seal. A crest.
Carefully—so carefully—she broke it.
She read every word twice.
Hogwarts School of Witchcraft and Wizardry…
She gasped.
“Magic has a school?”
The air around her fizzed, warm and pleased.
“I knew it,” she breathed, spinning in a delighted circle on the crash mat. “I knew you were real!”
She laughed—clear and ringing—and promptly attempted a celebratory back handspring.
She stuck the landing.
“Ten out of ten,” she told herself proudly.
***
Miles away, in a tidy office lined with portraits, Professor Minerva McGonagall stared at a returned envelope with growing unease.
Privet Drive had sent them all back.
Undeliverable.
Again.
Albus Dumbledore frowned thoughtfully.
“That is… unexpected.”
Severus Snape’s eyes darkened.
“Or not,” he said quietly.
And somewhere in a London community centre, entirely unaware that she was being searched for—
Amaryllis Potter practised her leaps in the dark.
Light on her toes.
Magic humming in rhythm with her heartbeat.
And for the first time in her life—
The world was about to come looking for her.