Watching that made my brain puke up a bunch of bad feelings from memories of dealing with abusive customers over a 35 year career in restaurants. It's making me shaky and giving me goose bumps. That girl is seriously messed up, borderline personality disorder or sociopath or something serious on a total rage meltdown. Just predatory and vicious. Glad she is also a complete narcissist and posted such a great documentary of her tantrum. As to what she actually said and did to these employees...well, why comment on the barking and growling of a rabid animal? Not worth dignifying it. Although I would like to think I would punch her in the nose if she had used the camera to "stare" at me, like she did to those two older male customers. Kinda wish one of the men had gone into Dad mode, and called her out on her horrid behavior.
Some of these severe customer abuse scenarios are traumatic enough that they stay with you for life. Notice how calm the crew there stayed. They will carry suppressed outrage and job loss anxiety memories from incidents like this for years. It is a reason why verbal assault is actually a coded criminal offence.
I hope they watch and recommend this clip. It is cathartic. I wish that stores and restaurants would be able to record sound with security video. It is so crucial, but there are legal restrictions to doing that still. There are times when a customer can be so outrageous, that if you lack a witness, a manager might just not be able to believe it when you tell them how bad the customer really is, and of course, the more sophisticated cranky assholes tend to morph into a sweet and reasonable, "patient" customer when a manager does come over to hear their complaint.