Sanna is originally from Finland and began her career as an autopsy technician in 2004 with the Department of Forensic Medicine at the University of Helsinki. She holds a degree from the University of Helsinki with a focus on forensics. While working for the Department of Forensic Medicine in Helsinki, she responded to the South-East Asian Tsunami in December 2004. She spent one month assisting as an autopsy technician on site in Phuket, Thailand. She moved permanently to Florida in 2010 where she pursued other career interests before returning to forensics in 2019. She joined the District 8 Medical Examiner’s Office in Gainesville in 2023.