Kathleen (Katie) Vasta Hammerstone, 89, of Equinunk, Pennsylvania passed away on Friday, February 24, 2023 at her son’s home. She was born and raised in Bronx, New York and lived in Edison before moving to Pennsylvania to be with her son. Kathleen worked as an oral surgeon assistant for 36 years. She was involved with Home Instead in Warren County helping seniors. Kathleen was a devoted and loving mother, grandmother, wife and sister. Kathleen was predeceased by her husband, Joseph S. Vasta in 1974; parents, Louis and Kathleen Martel; her brothers, Henry, Louis, Eddie and Jimmy Martel; and her second husband, Bill Hammerstone. She is survived by her son, Joseph Vasta; daughter-in-law, Cindy Vasta; sister, Mary Mumm; and her grandchildren, Joseph R. Vasta and Emily K. Vasta. Relatives and friends are invited to visit on Thursday, March 2, 2023 from 2:00 p.m. - 4:00 p.m. & 7:00 p.m. - 9:00 p.m. at Boylan Funeral Home, 10 Wooding Avenue, Edison. A Funeral Service will be held on Friday, March 3rd at 10:00 a.m. at the Funeral Home. Interment will follow at St. Peter’s Cemetery, New Brunswick.