Martinelli is a newsroom fellow at WPLN. She began as an intern at the station, where she reported on immigration, social issues and criminal justice issues, among other topics. Before arriving in Nashville, she split her time between the assignment desk and the investigative team at CBS 46, one of Atlanta's top-rated news stations. She has produced news segments and worked as a production manager for several live shows produced in conjunction with Georgia Public Broadcasting. She graduated with a degree in Journalism and a minor in criminal justice from Georgia State University in May 2017.
Before attaining her degree, Martinelli spent five years managing operations and media for a major Atlanta law firm and also worked as a writer and copy editor for Real Atlanta Magazine, a now-defunct bilingual monthly. She has previously interned at Gwinnett Daily Post, Georgia's second largest daily newspaper, and Atlanta Latino, a Spanish-language weekly, where she stayed on to report on immigration, education and issues affecting the local community. Martinelli is a National Association of Hispanic Journalists scholarship winner, a NAHJ-NABJ 2016 Student Projects fellow and in 2017 was named a Chips Quinn Scholar by the Newseum Institute.