Karen L. Sidler, 76, of Lancaster, passed away on January 16, 2022, due to Covid 19. Born in Lancaster, she was the daughter of the late Harvey Sr. , Mary Ellen McKelvey Gaintner. Karen was a graduate of Catholic High School. Surviving is her soulmate since 1963, William Sidler, who will forever love her, and Two daughters, Kimberley Zellers and Christina, wife of Troy Biddle. Sister Shirley Shertz and three grandchildren, and four great-grandchildren. She is preceded in death by her brother, Havey Gaintner Jr. A Memorial Service will be held at St. Leo the Great Catholic Church, 2427 Marietta Ave Lancaster, with Rev. Peter Hahn on Monday, July 18, 2022, at 11 AM. Interment will follow at Conestoga Memorial Park 95 second lock rd. , Lancaster, PA 17603