Wilma Heckel Grunewaldt, 100, of Mitchell, formerly of Ethan, SD, passed into eternity Friday, September 8, 2023, at Firesteel Healthcare Center in Mitchell. Funeral services will be 10:30 AM Wednesday, September 20, at Harvest Community Church in Mitchell. Visitation will be one hour prior to the funeral service. Burial will be at Sunset Memorial Cemetery in Mitchell. Arrangements by Bittner Funeral Chapel.