She was born on March 3, 1939, in Sandwich, IL, the daughter of Harold and Bernice (Hanson) Van Winkle.
Diane was united in marriage to Robert “Bob” Oftedal in Shabbona, IL. They were blessed with two sons, Kyle and Kole.
Diane was assistant to the Comptroller and Business Manager at Kishwaukee College in Malta, IL, for twelve years. After moving to Amboy, she was employed as a bookkeeper with the Lee F.S. Inc. for eight years.
Diane enjoyed being involved as a Cub Scout and 4-H Leader in her children’s early years. Her first love was showing, riding, and training horses. In showings, she achieved with two of her mares to the position of top 5 horses in Halter with the American Paint Horse Association. She also enjoyed spending one day a week for over 20 years riding with many good friends.
Diane was an animal lover, caring for many dogs and cats, making sure no one would go hungry if they wandered in.
She is preceded in death by her parents.
Diane is survived by her husband, Bob; two children, Kyle Oftedal and Kole Oftedal of Amboy; grandchildren, Kalyn Oftedal of DeKalb, Kolton Oftedal of Sycamore; sister, Bonita (Jerry) Schmidt of Morton; brother-in-law, James (Vicki) Oftedal of Naperville; and close cousin, Phyllis (Dale) Knutson of Malta.
Funeral services will be on Tuesday, Aug. 25, 2026, at 11:00 AM at Immanuel Lutheran Church in Amboy. Burial will follow at Prairie Repose Cemetery in Amboy. Visitation will be on Tuesday, Aug. 25, 2026, from 9:30 AM until the time of service at 11:00 AM at the church.
Memorial donations can be made to Pegasus Special Riders, P.O. Box 293, Oregon, IL 61061.
Arrangements by the Mihm-Jones Funeral Home in Amboy.
