ST. PETERS, Mo. -- The wife of a police lieutenant is now facing charges after she drunkenly shot her husband, according to charging documents.

Police say 46-year-old Nancy Lynn Applegate shot her husband, Bellefontaine Neighbors Lt. Shawn Applegate, in their St. Peters home after the Guns 'N Hoses fundraiser last Wednesday, Nov. 22.

According to the charging documents, the Applegates were at Guns 'N Hoses with another couple. They said Nancy was "extremely intoxicated" on the drive home and was acting strangely.

Shawn apparently carried his wife to bed and then drove the other couple home. When he arrived back at his house, he says he went into the bedroom where Nancy became agitated and was making threats to harm herself.

Shawn told police he was concerned Nancy may be attempting to get a weapon, so he held her arms down. That's when he says his wife bit his neck and the conflict continued as the couple moved to the living room then the garage. Shawn says his wife pointed a gun at him and he grabbed it in self-defense, attempting to push the muzzle toward the floor.

That's when the gun went off, and a bullet passed all the way through Shawn's upper thigh.

Nancy called 911, and officers arrived moments later.

Nancy admitted to police that she'd shot her husband and said she feared for her life after her husband strangled her on the bed. The charging documents say Nancy's telling of the events differed from evidence, including the location of the shooting, the timeline of events, and she said she had text messaged friends, but the messages could not be found on her phone.

Nancy Applegate has been charged with first-degree domestic assault and armed criminal action. She's being held at the St. Charles County Jail.