When the Pumpkin Masked guy stumbled back, Emmy just started swearing at him. He smelled really bad, by the way, she realized once she was in proximity to him, and that was just another entirely pleasant feature. He was a nutcase who tried to grab girls and hurt them. She pulled her phone out of her jacket pocket; she was going to call the police and get his ass arrested, a fact that she made abundantly clear during a profanity laden speech that was probably only half intelligible for all the swearing and high emotion.
Well, some of it got out, at least, but she was cut short when vines appeared from the ground, wrapping themselves around the fairy girl's legs, and then Emmy's shouts turned just to screams. Higher in pitch. She was panicking, so much that she tossed her phone away in an effort to back pedal away from the situation before she, too, was wrapped up in something from Little Shop of Horrors or something.
It was about the time that lights started flaring that part of Emmy wondered, dispassionately, if she had been drugged at the party and it was now kicking in. Was this really happening? It couldn't be. Could it? There was light--there was the splashing of water from somewhere even though there was no water around, and when she could see again past the bright light, the fairy girl was gone. There was another woman in a totally different costume (and probably a wig, too) in her place, which was even more crazy.
"Holy shit," Emmy stumbled backwards, inadvertently closer to the Pumpkin Ghost.