Priscilla Deal Rossi is fighting for her younger sister, Christina Deal, who was murdered 23 years ago.
She and her parents want to keep her killer, Joseph Amador, in prison. He is up for parole in June.
Amador dated Ms. Deal for just a few months before he stabbed her on Sept. 27, 2003, and dumped her body in an industrial park off Wynn Road in Oregon. Police discovered her body the next day…