"My name is Professor Moody. Some of you may know me as a legendary Auror. Most of you may know me as a complete lunatic. None of you may know my intentions of why I'm teaching at this school-end-of-story-good-bye-the-end!

"Now, when it comes to the Dark Arts… I believe in a practical approach. For example, who can tell me how many Unforgivable Curses there are?" Professor Moody was a very intriguing teacher, at minimum.

"Three." Trust Hermione to give the facts.

"And they are so named?"

"Because they are highly unethical, even by wizard standards. The use of any one on a human will result in a one-way ticket to Azkaban." Of course, I can show off too.

"Good. Now, the Ministry says you're too young to see what these curses do. I say different! You need to know what you're up against! You need to be prepared! You need to get here far more punctually, Miss Dunbar!"

"Whoa… sorry I'm late, Mr Moody…"

"That's Professor Moody to you! Now… who knows a curse? …Ah, you!" Professor Moody had selected Ron.

"My dad did tell me about one… the Imperius Curse."

"Correct! Now for the demonstration… for obvious reasons, I can't use these on you," yet, "so I'll need to use a proverbial 'guinea pig'. Test classes didn't like the guinea pigs, so I'm using spiders… Imperio!"

The spider shuddered for a second, stood up on two legs, before promptly swinging around the room like a Spiderman. He promptly hit his head on the window, falling into a tub of water. No one was brave enough to fish it out, and indeed, I felt sorry for the poor thing.

"Another, another…" Moody asked. "You!"

"…The… …the… the Cruciatus Curse," Neville Longbottom offered.

"Another correct spell! I do have a spider per curse here… but this one needs to be bigger. Engorgio! Crucio!" The spider grew larger, before twitching in pain. Neville seemed to be in immense pain as well, as he was in his own torment bubble.

"Stop it! Can't you see it's bothering him? STOP IT!" Hermione cried.

"Right outta my mouth." Professor Moody ignored me. He stepped in front of Hermione.

"Perhaps you can tell us the last Unforgivable Curse, Miss Granger?" Hermione neglected. For the first time in her life. Time for my out of character moment…

I felt all of my rage from this lesson boiling up. Moody's callous treatment of Ron, Neville, Hermione, and Fay Dunbar. His almost… loving address of violence, the way Tom Riddle spoke. The fact his magical eye reminded me too much of Wormtail. I channelled it all into my thoughts, and cast.

"Avada Kedavra!" I cast, allowing a jet of green light to emit from my wand. It takes far less loathing to kill a spider than a human being, so it was easy to snuff out the life of the poor thing. Everyone's eyes turned to me. Tears welling up in my eyes as to what the class must think of me, I ran, pausing only to put the still twitching Cruciatus spider out of its misery.

In hindsight, maybe not a good idea.

Ginny found me weeping in the corner of the common room, wrapped up in a blanket like a sick person. She sat down by my head, and started stroking.

"What happened, Amber?"

"I… I cast the Avada Kedavra."

"…Wow, Amber… that's like, not even N.E.W.T. stuff."

"Ginny, do you even get it?"

"Oh… Dark Magic in a classroom. I gotcha."

"Not exactly. Moody was teaching the Unforgivables. It's just… I don't think anyone expected that."

"…Listen, Amber, I am really sorry about that. That's not what you'd call fun, especially after that fiasco last year…"

"Yeah, don't remind me."

"Well… I'm sure Harry and Hermione would still stick around. And Ron. And the rest of my brothers, bar possibly Percy."

"Comforting, Ginny."

"Amber… you are a good person. Not just that, but even I'm jealous of you and Harry. I think, no, I know, that everyone will stop buzzing about this sooner that you'd think."

"Wait, you're jealous of me?"

"What? It's not like you're jealous of me and Harry!"

"I am."

"…Amber, you're like a mother to Harry, as well as a girlfriend. What do I have that can top that? Sure, I'm slightly cuter than you, because we're next to identical and I'm younger, but apart from that… you're like his perfect girlfriend."

"Thanks for the comfort, Ginny, but I'm pretty sure he's yours."

"You're the one who skipped Divination."

"Touché."

Short, sweet, and ...dangit, I can't make this sentence alliterative. Insert your own word meaning 'creepy' or something that starts with 'S'.

So Amber can cast Avada Kedavra. Big whoop. She cast up all her hatred for Moody and still had no confidence she could've killed someone with it. It's not like it'll be a major plot point for the future, right? Right?

And yes, Amber did leave Divination when Hermione did. If your sister got fed up with a class, and your teacher basically reacts like 'no big loss' or worse 'what did I do?', would you leave? Thought so.

Neither can live while the other survives.