Timeturner

"Hermione," said Harry, as Hermione had snapped once again at Ron, who had gone off in a huff, "You plainly have some sort of spell or artefact which permits you to go to twice as many classes as usual."

"Wh... what makes you say so?" quavered Hermione. "It's none of your business!"

"It's as much my business as you worrying about me being sent a cursed broom," retorted Harry with some heat. "Because I can see the damage which is happening to you."

"There's nothing happening to me!"

"Will you listen to yourself, already?" said Harry, incredulously. "Look, I'm not asking what it is; presumably McGonagall is aware."

"Professor McGonagall," said Hermione, automatically.

"Yeah, whatever," said Harry. "You are using whatever it is to do homework as well?"

"Yes, of course."

"And having extended your waking hours by six hours or so, how much time are you factoring in for the extra sleep you need to cover that extra work?" asked Harry.

"I can't use it to sleep with! Madam McGonagall told me to use it responsibly!" said Hermione, scandalised.

"Hermione, your parents are medics. Do they know that in every 30 hours you are only getting 8 hours sleep, or less because your mind won't switch off because it's over-tired?" said Harry. "Or to put it bluntly, you're functioning effectively on 6 hours sleep per normal day, or less. How can you even say for one moment that this is healthy?"

"But..." Hermione's mouth fell open rather foolishly. "I hadn't thought of it that way."

"Now you go and ask McGonagall if you are supposed to use it to rest as well as doing two days' work in one day, and if you are not, then I'm writing to tell your parents that she is guilty of child abuse by sleep deprivation which is counted as torture in the muggle world. And I'll write to the Prophet about it too; I won't have anyone intentionally torturing you."

"Oh, Harry! I... I am sure it's not intentional."

"She should have made it clear then, knowing what you're like, or noticed how it's getting to you," said Harry, grimly. "I'm not letting anyone hurt you."

Somehow this ended up with a Hermione-hug which became a snogging session.

Two startled teens stared at each other.

"I... willyoubemygirl?" asked Harry.

"Oh, yes! You really care," said Hermione.