Kathryn Koronik, age 70, of Wilmington, passed away peacefully surrounded by her family on Saturday, July 19, 2025.

Kathryn was born in Wilmington, daughter of Charles Biliski Sr. and the late Margaret (Carbone) Biliski. She graduated from Conrad High School and went on to become a Food District Manager for the Christina School District until her retirement.

Kathryn was a devoted mother, mommom, and friend whose generosity, understanding heart, and unwavering support touched everyone who knew her. Family was the heart of her world — she found joy in every moment spent with those she loved most. Nothing brought her greater happiness or pride than her grandchildren, Kai and Kenji, whom she adored beyond words. Kathryn's love for them was boundless and radiant — they were her greatest joy, her daily inspiration, and the center of her world. She delighted in every hug, every laugh, every shared story and silly game. She never missed a chance to make them feel treasured and deeply loved.

She especially cherished time with her children, Jessica and Vincent, and her daughter-in-law Mika. Kathryn loved cooking, playing video games with her family, watching her favorite soap operas, and reading stories that brought comfort and joy to Kai and Kenji. Her positivity and warmth created a home filled with laughter, love, and countless cherished memories.

She will be remembered for her kindness, her open heart, and her ability to make everyone feel cared for and understood. She will be deeply missed and forever loved.

In addition to her mother, Kathryn was also predeceased by her loving husband, Vincent C. Koronik, and her brother, Christopher Biliski.

In addition to her father, Kathryn is survived by her daughter, Jessica Koronik; her son, Vincent Koronik, and his wife Mika; her grandchildren, Kenji and Kai Koronik; her brother, Chuck Biliski; and numerous nieces, nephews, and close family friends whom she loved dearly.

A visitation for Kathryn will be held on Monday, July 28, 2025, at St. Elizabeth Roman Catholic Church, Clayton and Cedar Streets, Wilmington, DE 19805, where friends and family may call from 9:30 to 10:30 a.m., with a Mass of Christian Burial following at 10:30 a.m.

In lieu of flowers, the family suggests donations in Kathryn's name to the Helen F. Graham Cancer Center, 4701 Ogletown Stanton Rd, Newark, DE 19713.