Grand Haven, Mich. — A 59-year-old man was sentenced to 32 1/2 to 90 years in prison on March 30 for the murder of his longtime girlfriend during a New Year’s Day dispute over where they would live. The case, which spanned from Zeeland Township to Las Vegas, culminated in a series of troubling events following the tragic incident.
Randall Alan Grinwis received his sentence after being convicted of second-degree murder and larceny in the January 1, 2024, death of 63-year-old Donna Hyma. The couple had been together for nearly two decades. Prosecutors characterized the killing as a prolonged assault rather than a momentary loss of control, emphasizing that it occurred within their home.
The argument arose at their residence in the Ottogan Mobile Home Estates, where alcohol was involved. Grinwis reportedly placed his forearm across Hyma’s neck while she sat on the couch, ultimately leading to her death by asphyxiation. Initially regarded as a potential natural death, an autopsy later redirected the investigation toward homicide. By the time authorities arrived for a welfare check, Grinwis had already fled the scene.
Following the fatal encounter, Grinwis withdrew $1,800 from Hyma’s brother’s account and absconded with the money. Prosecutors revealed he drove away, later making a 911 call to request a welfare check on Hyma, before discarding his cellphone to evade tracking. His journey took him from Michigan to Chicago and finally to Las Vegas, where he gambled extensively in a hotel until the money ran out.
Detectives leaned on Grinwis’ confessions during the trial, presenting his own words as pivotal evidence. After approaching Las Vegas police on January 15, he detailed the circumstances surrounding Hyma’s death. During his testimony, Grinwis demonstrated how he applied pressure to Hyma’s neck, acknowledging that she did not resist the assault. While the defense attempted to frame the incident as a spontaneous act fueled by alcohol, the prosecution maintained that Grinwis had ample opportunity to halt the attack.
At sentencing, Judge Karen Miedema emphasized that the murder was entirely avoidable. She criticized Grinwis for his choices and underscored that the crime should not be dismissed as a mere act of rage. A prosecutor echoed this sentiment, taking issue with the defense’s narrative that Grinwis “snapped,” highlighting that he had time to reconsider his actions during the assault.
During the hearing, Hyma’s family took the opportunity to share their grief and reflections. Her daughter, Lisa Vanderyacht, spoke of the betrayal felt by trusting Grinwis with her mother’s life. She described the profound loss that extended beyond Hyma’s passing, encompassing the image of Grinwis that the family had come to know for two decades. Relatives painted a portrait of Hyma as humorous and beloved, contrasting starkly with the grim events that unfolded in their home.
As of now, Grinwis is set to serve his lengthy prison sentence, marking a definitive end to this tragic case. While the family of Donna Hyma continues to cope with their grief, the ruling alleviates some burden by asserting accountability for his actions. The court’s decision serves as a sobering reminder of how mere arguments can take a horrific turn, leaving irreversible impacts on those left behind.