Finn was born in Houston and raised as an only child by her single mother in Kingwood, Texas.[5][6] She attended Kingwood High School, where she was a member of the drill team and National Honor Society, as well as a math tutor.[5] Finn earned her Bachelor's degree in journalism from Boston University,[7] and a master's degree in political management at George Washington University (GWU).[6] She was named a fellow at GWU's Institute of Politics, Democracy and the Internet in 2007.[8]