Remus/Dora
Catching sight of Remus, Dora excused herself from the bloke she was dancing with as soon as the song was over. Wandering over toward the food, she kept an eye on him, hoping he was thinking the same thing she was thinking.
Which was exactly what she'd planned for. Making sure he was watching, she exited the Great Hall and hurried to the girl's loo, where there was a costume change waiting for her. After morphing herself taller, blonder, and prettier, she quickly changed out of her costume and into a butterfly one, complete with small wings. Then, taking a breath, she exited the loo, hoping against hope he'd be somewhere nearby waiting.