Kathleen J. Gustavis, 68, of Amherst, passed away peacefully on Tuesday, February 13, 2024, at Cooley Dickinson Hospital in Northampton after a short illness. Kathleen was born in Northampton on November 22, 1955, the daughter of Michael and Doris (Janssen) Kennedy. She was raised in Northampton and attended local schools, graduating from Northampton High School in 1973. Kathleen worked for many years at the Medicine Shoppe in Florence. Later, she was employed as a secretary at Cooley Dickinson Hospital in Northampton working in the patient admitting department. Kathleen was sadly predeceased by her parents and her sister Patricia Luchini. She is survived by her loving and devoted husband John Gustavis, her son Sean Gustavis and his girlfriend Ashley of Easthampton, her daughter Lindsay Lavalley Fuller and her husband Jason of South Hadley her step children Nicholas Gustavis and his wife Stephanie of Connecticut and Jillian Plamondon and her husband Jim of Florida and her grandchildren, Madison, Bryce, Noah, Colton, Colby, Anderson, and Evelyn . She also leaves behind her sister Jane Kelley, her brother Michael Kennedy and several nieces and nephews. Calling hours for Kathleen will be held on Saturday, February 24, from 9-11 at the Ahearn Funeral Home, 783 Bridge Road in Northampton, followed by a service at the funeral home at 11:00am.