Kelly graduated from Hobart and William Smith Colleges cum laude (B.A. in Political Science, Sociology, and Latin American Studies). While in college, she studied in Peru and Ecuador for six months. She graduated from New England Law cum laude. Kelly practiced in medical malpractice for five years before taking a break from law to raise her family. Kelly joined Kertzman & Weil in 2020. After living in Wellesley for twelve years, Kelly and her family now live in Natick.