A Camden County jury convicted 22-year-old Paige Pfefferle back in September of murder, weapons offenses and hindering apprehension in the death of 21-year-old Matthew Hus.
Hus was found stabbed to death at her home in Audubon Park, Camden County in 2010.
Authorities say the two argued over whether Pfefferle should live at LaSalle University, where she was a student, or with her parents in Audubon Park before stabbing her boyfriend with a knife from her parents' kitchen.
She had said that the stabbing was accidental.
The judge ruled Pfefferle must serve the full 30 years of her sentence and must serve five years of parole supervision after her release.