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Lee Ann
Rust Cosgrove
Sep 9, 1963 — May 30, 2025
Slidell
In Loving Memory of Lee Ann (Rust) Cosgrove
It is with deep sorrow and much love that we announce the passing of Lee Ann (Rust) Cosgrove, who, after a long 5-month battle with cancer, departed this life on May 30, 2025 surrounded by family and friends.
Born on September 9, 1963 in Slidell, La, Lee lived a life defined by compassion, unwavering strength and boundless devotion. She was the heart of her family - a steady, quiet force who gave everything she had to those she loved, never asking for anything in return.
A selfless soul, Lee spent her life caring for others, often putting her own needs aside to ensure those around her felt loved and supported. Her hands were never still - always cooking, cleaning, working, giving - always doing something to make life easier for someone else. She gave of herself freely, never seeking recognition but always earning respect.
She was a person of integrity, a tireless work ethic and remarkable resilience. Whether it was at work, at home or in offering words of comfort during difficult times, she led by example and did her best in all she did.
Above all, she was a devoted mother, grandmother and wife. Her family was her greatest joy and proudest accomplishment. Her love shaped many lives, and her wisdom will remain a guiding light for generations to come.
Lee is survived by her husband, Richard Carl Cosgrove, her son Dalton Cosgrove; her daughter Scarlett Cosgrove (grandson Elliott Pena), her stepson Dustin Cosgrove (grandson Dylan Cosgrove, grandaughter Mia Meyer) as well as Chris Rust (brother) and many nieces, nephews, aunts, uncles and cousins.
A community-minded person, Lee served in many capacities for various organizations: St Tammany Chamber of Commerce- 2011 & 2013 Ambassador of the Year, 2016 Outstanding Member of the Year, 2010 Member of the Month; a founding member of the Pope John Paul II High School Alumni Association, and its' President 2005-2007; Edward Jones and BNI member 2007-2009, Regional Leader 2007; Leadership Northshore Class of 2012, Alumni of the Year 2016; National Association of Women in Construction Rookie of the Year 2017, Woman in Construction of the Year 2023 and Chapter President 2024-2025.
She volunteered for multiple groups as well, including the OZONE Music Foundation.
A memorial service will be held at Honaker Funeral Home, 1751 GAUSE Blvd. WEST (IN FOREST LAWN CEMETERY), Slidell, LA on Saturday, June 14, 2025, at 10:00 A.M.
In lieu of flowers, the family asks that donations be made to SMH Foundation, memo Regional Cancer Center.
Though our hearts are heavy, we are grateful for the time we had with Lee Ann. She left this world a better place and leaves behind a legacy of love that will live on in all who knew her.
Clothe yourselves with compassion, kindness, humility, gentleness and patience...
Colossians 3:12
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