Historians in Spain say that about 90% of the people of Spain have some Jewish ancestors, given that some Jews stayed in Spain and converted to Christianity. Yes, some Jews did settle in Puerto Rico at the time of the Inquisition and did so as hidden Jews. https://en.wikipedia.org/wiki/History_of_the_Jews_in_Puerto_Rico
Her knowledge of history in general and Jewish history in particular are pathetically lacking. Perhaps she did have Jewish ancestors on one of her lines. That’s surely possible. Many Hispanics do.