Sphinx dorm: Ollie and Emily (the real one)
Despite all the crap going on, Ollie grinned as she left him with that last kiss. Hopefully this boded well, and wouldn't just be shrugged off like the last time they kissed. He had no idea what she had to go do, but no sooner had she begun to run when someone nearby was calling for help a little ways over. If he didn't know better, he could swear that a dementor had just chased someone into their room. Oh wait... he did know better. After what he was seeing, that probably was a dementor.
He shifted to his were form again and took off, following Emily's request to help the others here.