Yeah, that happened a couple of hundred miles north of here, in Canada. They wouldn't give her the restroom key, so she started acting like an animal in a zoo.
It doesn't just work one way, you have the right to refuse service to anyone unless it's a violation of some civil right - can't refuse to wait on someone because of their race, age, things like that. And being insane and/or on drugs is a valid reason to refuse service, she picked it up with her bare hands and made the whole place a bio hazard area, and endangered the real customers and the employees.