A bit surprising for an end-of-term feast, the Great Hall was still mostly empty when Kiri climbed up the Dungeons staircase. There was a puzzled look on her face, but further investigation would have made it obvious that she was not confused about the lack of students - her eyes were staring into space unfocused, and occasionally she furrowed her brow. Once or twice, it seemed as if she was about to start talking to herself. That her slow, meandering steps moved her in the direction of the Slytherin table looked almost like sheer luck.

Kiri sat down a little distance away from the other girl who'd already arrived. She mumbled a greeting, then resumed her aimless staring into space. Now she was also nibbling on her lower lip. Because Kiri was wondering if she'd completely lost her mind.

When she'd woken up in her bed that morning, drenched in sweat as after a nightmare, she discovered she'd acquired a set of new recollections.
She could not remember performing the actions that would lead to that particular set of recollections to find itself in her head.
Her brain, helpfully antagonistic as ever, was quite sure that she must have done. At some point. Probably.
Worse, while the memories themselves were vague and fuzzy, they were still clear enough that Kiri had needed the support of an armchair when she'd walked into the Slytherin common room. After seeing the barking boxes in front of Professor Lupa's office, of course - and she'd been pondering the same question ever since: Could she really have done that? And how? And why?

Kiri desperately needed someone to talk to, Raiden preferably, but at the same time wasn't sure if she was even going to mention it. It sounded crazy. She'd toyed with the idea of prodding the boxes with her wand, just to see what would happen. But what if it turned out it really had been her... somehow? She would certainly be expelled! And what if the Ministry got involved? Plainly, Kiri did not know what to do.