Hoffman, 17, is heard pleading with emergency operators to hurry.
“My grandma shot me,” he says. “I’m gonna die. Help.”
Layne sobbed Monday as she heard her grandson’s words replayed in court.
Hoffman was shot five times; two police officers testified that Layne told them at the scene on May 18: “I just shot my grandson.”
Her attorney said Monday that Hoffman was on probation for a marijuana conviction earlier this year and had tested positive for K2, a then-legal synthetic drug, a few hours before the shooting. Layne’s attorney, Jerome Sabbota, said he feared he would go to jail because of the test and demanded her car keys and money so he could leave.
Layne bought a handgun earlier in the year after a previous altercation with her grandson.
He was living with her after his parents moved to Arizona.
If convicted, she faces up to life in prison.