A bench warrant has been issued for a Columbia woman accused of aiding her boyfriend in the 2016 stabbing death of her husband.

Allison Elizabeth Oberdorff, 26, was scheduled to plead guilty on a third-degree felony charge of hindering apprehension and providing false information to law enforcement officers Tuesday morning, court records show.

However, she did not appear at Lancaster County Court House Tuesday and failed to appear for a scheduled meeting with her attorney, Christopher Lyden, on Monday, Lyden's law partner Cory Miller told Judge Merrill M. Spahn Jr at the courthouse.

Spahn issued the bench warrant following a brief exchange between Miller, prosecutor Kevin McGarry and himself.

Oberdorff is accused of deleting text messages between herself and Ronald L. Sheetz after Sheetz stabbed her husband, Michael Oberdorff, 44, at the Oberdorff's 322 S. Second Street home on Jan. 15, 2016.

Allison Oberdorff initially told police that she didn't know a phone number for Sheetz. However, officials found his number in her phone under the name of “Tiff” and discovered that numerous text messages between them had been deleted.

Sheetz, 42, pleaded guilty to voluntary manslaughter in December and was sentenced to 7 ½ to 15 years in prison. At his plea, details of the love triangle and the violent end of Michael Oberdorff's life were revealed.

Sheetz' public defender David Blanck informed the court that Michael Oberdorff was rightfully incensed when he came home to find Sheetz with his wife and called the ensuing altercation “extremely intense and violent,” according to media records.

“This was two men fighting over a woman who was, quite frankly, not worthy of either one of them,” Blanck reportedly said at the time.

Police also say she misled police on how Sheetz entered and exited the home the day of the fight.