If you order a vegetarian dish, there should not be meat in it, period. If you order a dish with no nuts because you’re allergic there should not be nuts in it period.
People can get killed because waiters do not pay attention, or the cook doesn’t.
I don’t think it’s lawsuit worthy but whoever put meat in her omelette should be punished. That’s not acceptable in food service. If your customer doesn’t want something and they specifically say they don’t, and you do it. That’s incompetence. Plain and simple.
[the pertinent part of your reply]
Agreed. And if physical harm results, all for a lawsuit. But being offended should not be lawsuit worthy.