"Don't think it's something yer in danger from," Hagrid says seriously.  "More likely it - "

He glances between her and the Healer.

"Well, maybe I oughta tell you the story in private."

"...Okay."

From the Healer: "I think our most pressing concern is getting you something for malnutrition - I understand your muggle parents weren't feeding you adequately? - and getting you your first dose of Elixir.  Getting your Elixir is a bit like muggle kids getting their vaccines, except it's a potion.  It strengthens your immune system, it can cure little ailments that other healing charms can miss, stave off certain magical diseases... important general-health supplement."

"Does it have side effects?"

"Nothing serious," says Healer Pendleton.  "Elixir can sometimes make people feel giddy or unusually energetic for a few minutes after they take it, but that passes.  The Benourishing Potion we're going to give you can sometimes cause mild allergic reactions, but most people don't experience anything like that."

"I don't think I have any allergies..."

"That's good to know!" says Healer Pendleton, making a note on his parchment.  "Though there are some magical ingredients you wouldn't have been exposed to before today, so it's good to be prepared for the possibility."

She nods, seriously.

“All right,” says Healer Pendleton.  “First I’m going to cast some diagnostic charms on you, just in case there’s something Mr. Hagrid missed.  All right?”

"...All right."

Diagnostic charms mostly consist of Healer Pendleton waving his wand around like a metal detector while murmuring weird fake-Greek incantations, though for a couple things he unlocks one of the cupboards and takes out a wand-like non-wand instrument and waves that around like a metal detector while murmuring in fake Greek instead.

"Well, you're fairly healthy," Healer Pendleton says at the end of it.  "A bit slight for your age, but the Benourishing Potion and your Elixir will help with that.  Your eyes seem a bit sensitive to light as well... has she gotten her Hogwarts robes yet?" he asks Hagrid.

Hagrid shakes his head.  "Came straight here."

"Smart," Healer Pendleton says, and turns back to Harriet.  "All right, I'm going to go get your potions.  I'm also going to give you a hat with an enchantment that should help with your light sensitivity, and a letter to give your tailor when you meet with them - they'll send your school hats my way so I can have them enchanted for you too."

"Huh. Okay."

"...Thank you."

She's always known her eyes hurt when it's bright out, but that'd just seemed - normal.

"You're welcome," he says warmly.  "I'll be a few minutes getting the potions."  And he turns and goes.

Hagrid heaves a sigh and sits down on the floor.  (Even when he's sitting cross-legged on the floor and Harriet's standing up, he's so large that they're still about eye to eye.)

"Oughta tell you about your parents," he says.  "If you think you're ready to hear it.  'S not a happy story."

Slow nod. "Okay. I'm - ready."

"Is there anything you already know?"

"Mom's name was Lily Evans, but she's dead. She had red hair and was Aunt Petunia's big sister. Aunt Petunia said she didn't know who my father was."

"Yer dad's name was James Potter," Hagrid says.  "They went to Hogwarts together.  Met there.  Finer pair of wizards - "

He stops, sniffs, clears his throat.

"'Scuse me.  I knew 'em, is all.  Friends of mine.  Finer pair of wizards I don't think I ever knew."

"First thing is, Harriet, not all wizards are good people.  Some of 'em go bad.  And one of the worst there was..."

He shudders a bit.

"Folk still don't like saying her name.  Voldemort."

"Who was she?"

"No one knows," Hagrid says.  "Not even today.  Lotta folk didn't even know she existed, but Dumbledore did.  She was gathering followers all over the world, taking control of wizarding gangs and criminals.  Her people called themselves Death Eaters."

"Even now we don't know what she was up to, or all the people who were loyal to her, or who still is," he goes on.  "But she was gathering power, and she was killing anyone who stood in the way of it.  And ten years ago..."

He pauses, somberly.

"Ten years ago, she came after your family.  Your mum and dad.  They were Dumbledore's people, your mum and dad were.  Trying to figure out what she was up to, trying to protect people from her.  It was dangerous to try to get the word out about her - you didn't know who you could trust.  But they were doing what they could.  Voldemort wanted them out of the way, so she tracked them down."

"Except something happened that night.  We still don't know exactly what.  Your house was destroyed.  James was dead, Lily was dead.  But Voldemort's body was there too, and you were nowhere to be found.  Everyone thought you'd been killed, until just a few weeks ago.  Hogwarts can find wizarding kids, and a few weeks ago it found you.  It should've found you sooner.  If we'd known what was goin' on in that house - "

He stops.

"We don't know exactly how it happened," Hagrid says.  "Not even Dumbledore knows.  But I think your mum must've had something to do with it.  She was a great wizard, powerful, and - and good."

"...Oh."

He puts an enormous hand on her shoulder.  "It's all right to - not be all right."

She curls up a bit.

"Okay."

That doesn't really feel true.