Sandra Lynn Rivera

Sandra Lynn Rivera, a cherished soul known for her gentle nature, passionate heart, and selfless love, passed away peacefully on October 5, 2025, at her home in McHenry, IL. Born on July 12, 1945, in Chicago, IL, Sandra's life was a testament to the power of caring, respect, honesty, and love.
Sandra's early years in Chicago were filled with the warmth of a close-knit family. She was the beloved daughter of Casmir and Evelyn Sierminski, who instilled in her the values of kindness and integrity that she carried throughout her life. Sandra's sister, Patricia, shared with her a childhood rich in laughter and companionship, creating memories that would last a lifetime.
As a matriarch, Sandra's love knew no bounds. She was a devoted mother to her son, Henry Rivera, stepdaughter: Rebecca and a doting grandmother to Kenneth, Alex, Katelyn, Nick, Haley, Shelby, and Sterlin. Her great-grandchildren, Jackson, Grayson, Anderson, and Ila, brought immeasurable joy to her later years. Sandra's family was her pride and joy, and she nurtured each relationship with the same dedication and warmth she gave to every aspect of her life.
Sandra's caring spirit extended beyond her family to her community, where she was known for her honest and loving nature. She enjoyed spending time at Fish Lake Beach, where the sun and sand were the backdrop for cherished moments with friends and family. Sandra's love for Bingo and gambling was well-known, and her companionship was sought after by many during these spirited outings.
Those who knew Sandra will remember her as a respectful and loving presence in their lives. Her laughter was infectious, and her ability to make everyone feel valued was one of her most remarkable traits. Sandra's gentle demeanor was a comfort to all, and her passion for life was evident in the way she embraced every moment with enthusiasm and grace.
The family takes solace in knowing that Sandra is reunited with her grandson, Christopher Reinmann, and her parents, Casmir and Evelyn Sierminski, Aunt Lorraine, her daughter-in-law Denise, and all those whose lives she touched.
Sandra's legacy is one of unconditional love and selflessness. She left the world a better place by showing us the beauty of a caring heart and the strength of a respectful spirit. Her memory will continue to inspire and guide us, and her love will forever be the light in the lives of those she loved.
As we bid farewell to Sandra Lynn Rivera, we celebrate a life lived with passion and grace. Her journey may have come to an end, but her spirit will continue to live on in the hearts and memories of her beloved family and friends. Sandra's story is not one of sorrow, but one of profound love and the joy of a life well-lived. May she rest in peace, knowing she was deeply loved and will be eternally cherished.
A service will be held Sunday, October 12, 2025, at Justen's funeral home, 3700 Charles J. Miller Road, McHenry, IL from 1:00 pm-4:00 pm.
Arrangements have been entrusted to the Justen Funeral & Crematory. For information, please call the Funeral Home at 815-385-2400, or visit www.justenfh.com, where friends and loved ones may share memories of Sandra on her tribute wall.