Patricia E. (Stiller) Valuikas, 80, formerly of Natrona Heights, passed away Sunday, March 28, 2021, at Platinum Ridge Center, in Brackenridge. She was born Oct. 31, 1940, in Natrona Heights, to the late Harry D. Stiller and Lyda M. (Degnan) Stiller Bartholf (Charles W. Bartholf). Patricia graduated from Tarentum High School in 1958, attended Pitt University, where she graduated with a master's degree in science, and then went on to attend the University of Tallahassee, Fla. She worked for Gulf Research as a computer analyst. Patricia is survived by her sisters, Barbara (Ronald) Mildner, of New Kensington, and Judith (Bartholf) Schipani, of Florida; nieces, Jennifer (Bill) Mildner-Roll and Deborah Carnathan; nephews, Vincent (Laura) Mildner and Dana (Joanne) Stiller; and great-nieces and nephews. Patricia was preceded in death by her parents; her husband, George Valuikas Jr., in 2012; brothers, Donald E. Stiller, in 2020; and Charles Bartholf, in 1953. Visitation and services were private for family only and Patricia was laid to rest next to her husband in Mt. Airy Cemetery. Arrangements were entrusted to RJ SLATER IV FUNERAL HOME & CREMATION SERVICE, 1000 Freeport Road, New Kensington, PA 15068, 724-335-0100. www.rjslater.com.