Allison is a U.S. citizen who is married to Stefania, an Italian citizen.
Allison was living in New York City when she met Stefania, who was there on vacation. The two stayed in touch after Stefania went back to Italy and visited each other as much as they could. Though they wanted to live together in the U.S., Allison could not sponsor Stefania for a visa because of the Defense of Marriage Act (which was struck down in 2015 by the Supreme Court in Obergefell v. Hodges). So the two women moved to London and built a life there, including getting married and having two sons, Lucas and Massi.