Sounds like she is possessed by a demon, another source:

[link to www.pressandguide.com (secure)]
She said the woman was screaming loudly as she walked towards the stage. While trying to get her to leave the stage area, is when the alleged biting and pinching happened.

“She bit me, just reached over and bit me, and it felt like she pinched me too, and she left a bruise, some little bruises and one big bruise,” Costantino said. “And she was slapping all these guys, and this guy was just trying to guide her out and ask her to leave, and she refused to leave, and she kept saying, ‘I have a ticket!’”

A police report was filed Oct. 30 about the incident. A decision on charging the woman has not yet been made