Jamie Lee Passmore and her boyfriend, Douglas L. Bauer, have now both been charged with third-degree assault. Bremerton police have said the pair had failed to secure guns they were not authorized to own.
Investigators visited Passmore's residence and found a loaded, unsecured pistol the same day her son brought a gun to school. They also found a loaded 12 gauge shotgun leaning against the wall next to a night stand at the home.
Passmore reportedly also drove a vehicle with a handgun in the glove box even though as a convicted felon, she is not legally allowed to own a gun.
Passmore has also been charged with two second-degree counts of unlawful possession of a firearm. Bauer has been charged with one second-degree count of unlawful possession of a firearm.
Investigators said Passmore and Bauer are currently out of state but are expected in court Thursday to answer to the charges.
The 8-year-old victim in the classroom's shooting at Armin Jahr Elementary School is recovering at Harborview Medical Center where she underwent five surgeries. She is listed in serious condition.