Lonni was born in Delaware but raised in North Carolina. She was a cheerleader for nearly 12 years. Lonni portrayed various roles in community theatre. She has been acting in independent films since 2006. She studied drama in college but ultimately received a Bachelors of Science in Healthcare Administration and a Associates Degree in Criminal Justice. Since 2008, Lonni has taken on many independent film roles.
She is known best for her portrayal of villainous characters. In the horror film "Demons Rising", Lonni played a possessed young woman which was directed by William Lee. Lonni has also filmed the movies "Dark Target", "The Girl", and "Architect of Chaos". Lonni was credited alongside Emmy Rossum for the TV series "Inside" directed by D.J. Caruso. Lonni starred in a TV comedy series in Baltimore called "Shante Hates Bushy" along with many other comedy skits in the series that aired on Fox every week in the Baltimore/Washington area. Lonni continues toward success in the film industry. Though acting is her number one passion, she has written two screenplays and has edited various small screen projects.