After graduating from Davidson Fine Arts in 2015, Antonia attended Emory University in Atlanta, where she became a member of Rathskellar, an improv comedy club that is reputed to be one of the oldest student improv groups in the country. Before graduating in 2019, Antonia gave her fellow improv troupe members a sweet shout-out on Instagram, writing, "Number one group and number one fans. Thanks for laughing at my jokes for 4 years."