A Maplewood woman was sentenced Thursday in Sherburne County District Court to an additional eight years in prison for supplying a fatal dose of fentanyl to a Marine veteran, one of several cases she’s been charged in.

Beverly Burrell, 22, was convicted in April of third-degree murder and third-degree sale of a controlled substance in connection with the April 2016 death of Dustin Peltier, 31, a veteran who suffered from post-traumatic stress disorder.

When Burrell was charged, Peltier’s mother said that her son had planned to go back into treatment for the addiction that overtook him after he began self-medicating to escape the nightmares he suffered after two tours in Iraq.

“He would go to treatment, do well, and then he would fall back again,” Carla Peltier said at the time. “He would come home for the holidays, and he would seclude himself. Slowly we would lose him again.”

Burrell is serving 14 years in prison on separate opioid​-related cases in Hennepin County. Two more cases against her involving drug fatalities are pending. Both trials are set for August.