A Tulsa County jury has been seated to hear the case against 28-year-old Shaynna Sims.
She is accused of attacking a victim in her casket.
Prosecutors say Sims went to the funeral home and cut the victim's face and cut and removed the victim's breasts and a toe.
The woman had died of natural causes and was the ex-girlfriend of Sims' husband.
Jury selection began on Monday.