ST. LOUIS COUNTY • A Lemay woman accused of murdering her aunt in 2014 has pleaded guilty to a reduced charge in the case.

Jamie Onkle, 26, pleaded guilty Monday to voluntary manslaughter and armed criminal action in the Feb. 16, 2014, shooting death of her aunt, Wendy Hall-Onkle, at Onkle's home in the 100 block of Mann Street. Onkle shot her aunt with a 7.62 mm rifle.

The victim's husband previously told the Post-Dispatch that his wife and her niece were arguing on Facebook about attending a friend's bachelorette party the night before. Onkle's lawyer has said she killed her aunt in self-defense.

Onkle was originally charged with second-degree murder and armed criminal action. Sentencing in the case is set for Monday in St. Louis County Circuit Judge Gloria C. Reno's courtroom.

Shake off your afternoon slump with the oft-shared and offbeat news of the day, hand-brewed by our online news editor, Mandy St. Amand. Sign up! * I understand and agree that registration on or use of this site constitutes agreement to its user agreement and privacy policy.