Sandra Layne, 74, a former schoolteacher, has an exam scheduled at in front of Judge Kimberly Small Monday at 11 a.m.
detectives said that Layne admitted killing her 17-year-old grandson, Jonathan Hoffman, on May 18. Hoffman, a senior at Farmington Central alternative high school, was shot multiple times in the condominium he shared with Layne and her husband in the Maple Place Villas complex, on the 6000 block of Brookview Lane.
Layne faces a charge of open murder and felony firearms possession.
On May 24, Small had granted the prosecution a delay in the preliminary exam to allow for a test of competency.
If bound over by a district court judge, a circuit court judge will determine whether she should face first-or second-degree murder. If convicted, the mother of five could be sentenced to life in prison.
Dramatic testimony from Detective Brad Boulet described Hoffman's plea for help to a 911 operator after being shot in the chest, as well as Layne's response to police.
"The subject stated that his grandma had just shot him in the chest and that he was going to die and he pleaded for help," Boulet testified in front of Judge Marc Barron. "At approximately the three-minute mark of the 911 call, the subject screamed and exclaimed he had just been shot again."
Boulet continued that as officers arrived, they heard several more gunshots before Layne came out and exclaimed that she had ""