Under the Jones Act of 1917, Puerto Ricans were collectively naturalized as U.S. citizens, which makes her mother a citizen of the United States.
First-generation Americans are people born outside of the United States to parents, neither of whom was a U.S. citizen. For this report, people born in Puerto Rico or other U.S. territories are not considered foreign-born. So, while she describes herself as a first-generation American, but also notes that her mother is from Aguadilla, Puerto Rico. Rather, her father, Anthony Guilfoyle, was a first generation American. He was born in Ireland and immigrated to the United States when he was an adult.