Kirsti Mack (Kirstine Leavitt), 75, passed away peacefully on March 9, 2026. Kirsti was born October 5, 1950, in Smoot, Wyoming, and was raised in the close-knit community of Star Valley, where she spent most of her life. One of twelve siblings, she grew up surrounded by family and developed the resilience, loyalty, and strong work ethic that would define her throughout her life. Those who knew Kirsti will remember her unmistakable laugh — loud, joyful, and impossible to forget. It was the kind of laugh that filled a room and brought others along with it, reflecting the warmth and spirit she shared so freely with family, friends, and neighbors. Kirsti was a familiar face around town and someone many in the community knew and loved. She took great pride in her yard, where her green thumb was evident in the flowers she nurtured and the garden she carefully tended. Her lawn was always immaculate, and it was not uncommon for neighbors to see her riding around on her beloved mower, making sure everything looked just right. In quieter moments, Kirsti enjoyed the simple things that brought her happiness. She loved spending time working on puzzles, watching the hummingbirds at their feeder, reading Stephen King novels, and collecting salt and pepper shakers. Above all, Kirsti loved her family. She was a devoted mother, grandmother, and great-grandmother whose greatest pride and happiness came from the people she loved most.

Kirsti was preceded in death by her parents, Charles and Lawana Leavitt; her brothers Lavar "Bubba" Leavitt and Alma Leavitt; her sister Anna Dee Leavitt; her daughter LaWanna Windley Ford; and her grandson James Southard.

She is survived by her daughters Stacy (Johnny) Chavarria and Patty (Dan) Leatherwood; her grandchildren Candice (Chad) Hockema, Chris (Kaila) Scott, Misty (Joe) Amarena, Justin (Jovonne) Leatherwood, and Josh Leatherwood; and her great-grandchildren Jaroyn, Tierney, Kayden, Elias, Ryker, Theodore, Penelope, Atlas, and Madelyn. She is also survived by her sisters LaReta Walton, Miriam Mack, Dorthy Leavitt, Donna Vickrey, Deena g, and Davana Leavitt-Valentino, and her brothers Glenn Leavitt, Jonathan Leavitt, and Joey Leavitt, along with many beloved cousins, nieces, nephews, and friends. Kirsti's life was deeply rooted in Star Valley, where neighbors become friends and family ties run deep. She was a familiar and welcome presence around town, and her warmth, humor, and unmistakable laugh will be remembered by many. Though she will be greatly missed, the love she shared will continue through the generations of family and friends who carry her memory forward.