I'm not convinced it would be illegal anywhere though. She isn't being prevented from eating there, simply being asked to sit is a particular place, chosen by t

I'm not convinced it would be illegal anywhere though. She isn't being prevented from eating there, simply being asked to sit is a particular place, chosen by the management. This is basically the definition of how seating works in restaurant. Your seats are selected for you, and if you don't like it you can go elsewhere...