it wasn't so long ago that jews fled spain---and went to south America-------if her family consisted of Sephardic jews---then she would STILL have Sephardic jewish relatives. Let me know when they show up. She can contact the various Sephardic synagogues in her home town---New York City
Alexandria Ocasio-Cortez is a quasi-Brock Hussaine Obama type thing. Nobody seems to have much info on her. As far as Jews being asked to leave Spain in 1492, according to my copy of A History of the Jews by Grayzel copyright 1947, on page 414 is the map of the migrations. The exiled Jews went East pretty much, North Africa, Palestine, Turkey, even Italy. The book is Jew-Centric and of course it also says some of Columbus's crew might have been crpyto jews, not realizing today they are consider slave traders, murderers, etc.

Either way, Columbus only anchored off Puerto Rico for a day to return some aboriginal slaves who indicated they were stolen from there.
In my vintage Encyclopedia Britannica, it says Puerto Rico was occupied by aboriginal Indians originally from the Amazon basin, then came Spaniard gold seekers working for Spain who had sex with some and had to slaughter some when they refused to recognize the authority of the King of Spain and of the Catholic church. Then came African slaves to replace the rebellious inhabitants. Other aboriginal Indians like the savage Caribs did stop by occasionally to kill folks and eat them on a BBQ, and of course to steal the Black slaves. French, British and Dutch Pirates also wanted a piece of the action in gold..long story short, it was a hellhole even back then and even Catholic Spaniards there sought exile from the madness in Puerto Rico and got the hell out. Did any Jewish person ever visit Puerto Rico as a result of the Spanish exile? It does not seem likely unless it was a slavetrader dropping off Africans for gold some 50 years after.
Looking forward to Cortez's DNA test! Should be fun for yet another laugh at her expense.