A 2013 graduate of Framingham High School in Framingham, Mass., Vonachen lettered in soccer, basketball, lacrosse and track. In lacrosse, she was a First Team All-Star selection her senior season and was a team Captain in 2012. Vonachen helped lead her team to a State Championship title in 2010. She was coached by PSU lacrosse/ soccer alumna and PSU Hall of Fame member Stacey Freda.
Caroline Elizabeth Vonachen is the daughter of Lori and Bill Vonachen. She has two brothers (Mitch & Colby).