Bonnie Elaine VanSpronsen, age 78, of Lowell, passed away Thursday, September 10, 2026. She was preceded in death by her parents, Fred and Marsha Koster; parents-in-law, John and Francis VanSpronsen; and brother-in-law, Robert Mulder.
Bonnie is survived by her loving husband, Karl Kenneth VanSpronsen; sons, Ken (Hillary) VanSpronsen, Josh (Erin) VanSpronsen, and Chris (Cheyenne) VanSpronsen; grandchildren, Hannah, Mackenzie, Lily, Hunter, Colt, Wesson, Brooklynn, Sonny, Andrew, and Amelia; three great-grandchildren; brothers, Dan (Alice) Koster, Mike (Roxanne) Koster, and Fred Koster; sisters, Kathy (John) Danevicz, Vicki (Joe) Chiarmonte, and Jodi (Pat) Piechocki; siblings-in-law, Cliff (Jackie) VanSpronsen, Neal (Carol) VanSpronsen, Johnny (Harriet) VanSpronsen, and Nancy (Gary Vos) Mulder-Vos; 19 nieces and nephews; and numerous other family members.
Bonnie was involved with 4-H and was a dedicated member of a search and rescue team K9 unit. She enjoyed crafting and training search and rescue dogs, but above all, she treasured being a grandmother and spending time with her family.
Visitation will be held from 2–4 pm on Wednesday, September 16, 2026, at Roth-Gerst Funeral Home, 305 N. Hudson Street, Lowell, Michigan 49331. Funeral services will begin at 4 pm. Interment Bailey Cemetery. Memorial contributions may be made to KYK9, 1930 Bishop Lane, Suite 1009, Louisville, Kentucky 40218.
4 Responses
So sorry to hear of Bonnie’s passing. She was a remarkable woman and lovely sister in law.
Praying for peace, and comforting blessings for family and friends.
To hear of Bonnie’s passing breaks my heart. I use to work with Bonnie years ago. She was a beautiful person who deserved the best life had to offer. Even though I have not seen her in years, I thought of her often. My condolences to her family. May the beautiful memories you have of her guide you in your grief. Rest in Heaven Bonnie. 💗
So sorry to hear of Bonnie’s passing. We worked together at my very first job and she always brightened my day with her stories! She truly loved her family and animals! I’ll never forget her smiling face and sweet voice.
Bonnie was one of my very first mentors in canine search and rescue. I will forever treasure her kindness. I wish I could have spoke to her one more time. Know that my heart goes out to her family and friends.