She then competed in Miss Connecticut USA 2013, which she won, and subsequently participated in Miss USA 2013, where she finished first, becoming the first Connecticuter to win the title. During the finals, she was asked a question about a Supreme Court ruling regarding criminal justice, and Erin responded, "If someone is being prosecuted and committed a crime, it should happen. There are so many crimes that if that's one step closer to stopping them, then we should be able to do so." In the finals, Erin competed with Miss Alabama USA and won.