Deadly Snake, Silent Dragon.

It's time

Back in Hogwarts, as Ivy was with Ailbert.
The Golden Trio has already gotten in trouble.

Professor McGonagall, in a tartan bathrobe and a hair net, had Malfoy by the ear.

"Detention!" she shouted. "And twenty points from Slytherin! Wandering around in the middle of the night, how dare you--"

"You don't understand, Professor. Harry Potter's coming -- he's got a dragon!"

"What utter rubbish! How dare you tell such lies! Come on -- I shall see Professor Snape about you, Malfoy!"

The steep spiral staircase up to the top of the tower seemed the easiest thing in the world after that. Not until they'd stepped out into the cold night air did they throw off the cloak, glad to be able to breathe properly again. Hermione did a sort of jig.

"Malfoy's got detention! I could sing!"

"Don't," Harry advised her.

Chuckling about Malfoy, they waited, Norbert thrashing about in his crate. About ten minutes later, four broomsticks came swooping down out of the darkness.

Charlie's friends were a cheery lot. They showed Harry and Hermione the harness they'd rigged up, so they could suspend Norbert between them. They all helped buckle Norbert safely into it and then Harry and Hermione shook hands with the others and thanked them very much.

At last, Norbert was going... going... gone.

They slipped back down the spiral staircase, their hearts as light as their hands, now that Norbert was off them. No more dragon -- Malfoy in detention -- what could spoil their happiness?

The answer to that was waiting at the foot of the stairs. As they stepped into the corridor, Filch's face loomed suddenly out of the darkness.

"Well, well, well," he whispered, "we are in trouble."

They'd left the invisibility cloak on top of the tower.

Days crept by and it was finally exams.

They had been given special, new quills for the exams, which had been bewitched with an Anticheating spell.
They had practical exams as well. Professor Flitwick called them one by one into his class to see if they could make a pineapple tapdance across a desk. Professor McGonagall watched them turn a mouse into a snuffbox -- points were given for how pretty the snuffbox was, but taken away if it had whiskers. Snape made them all nervous, breathing down their necks while they tried to remember how to make a Forgetfulness potion.
the very last exam was History of Magic. One hour of answering questions about batty old wizards who'd invented self stirring cauldrons and they'd be free, free for a whole wonderful week until their exam results came out. When the ghost of Professor Binns told them to put down their quills and roll up their parchment, Harry couldn't help cheering with the rest.

Ivy had noticed that his scar was giving him pain and discomfort, her own forearm was itching as well even though Ivy never had a death eater tattoo.
Ailbert's grandson was in the back of her mind, Ailbert made her promise to wait until school was over so she could help him find him, but Ivy knew she couldn't keep that promise.
She made Eva go back to the orphanage to steal documents.
She's been gone for two days now, and it started to worry Ivy.

Hermione always liked to go through their exam papers afterward, but Ron said this made him feel ill, so they wandered down to the lake and flopped under a tree. The Weasley twins and Lee Jordan were tickling the tentacles of a giant squid, which was basking in the warm shallows. "No more studying," Ron sighed happily, stretching out on the grass. "You could look more cheerful, Harry, we've got a week before we find out how badly we've done, there's no need to worry yet."