NEWS GROWING VULNERABLE AS THEY GROW OLDER Rise in senior-abuse cases prompts D.A. to step up to protect elderly Charles Warenecki (left) and Daniel Hart were convicted of third-degree murder in the mugging death of Alice Thurnau, 90. ALEJANDRO A. ALVAREZ STAFF PHOTOGRAPHER Deborah Cooper Nixon was tapped by D.A. Seth Williams (top) to serve as director of the Elder Justice Project, which was created to better prosecute perpetrators and better serve victims of abuse. BY MENSAH M. DEAN Daily News Staff Writer deanmphillynews.com, 215-568-8278 ALICE THURNAU never left the hospital after suffering brain bleeding and a broken arm, hip, ribs, eye socket and sinus bone when she was knocked to the sidewalk in front of her Port Richmond home while being robbed of her purse.