It depends, how good or bad your paella was?
But by being a Cuban or Cuban American and probably from Miami surroundings she surely is connected to the Cuban community over there, most of them or their parents flew from Cuba when the revolution was nearly over and remember that one of the revolutionaries who fought along Fidel was the legendary 'Che' Guevara, an Argentine. So her hate for everything with an Argentine name is somehow justified and it could very well come from this character, or maybe your paella really tasted very bad and she need to tell you that codified so you don't get offended, who knows.
And yes, no doubt about it, Argies are a superior bunch of Aryan race mongrel's by divine intervention of the Graf Spee sinking.