Nicole Lee Kirtley had been scheduled to stand trial Oct. 29 for the Nampa shooting death of George Richardson Jr. earlier this year. The trial has been moved back to April 1.
Richardson was found dead in his home in the 1900 block of Powerline Road with multiple gunshot wounds.
Kirtley is charged with second-degree murder and grand theft. The theft charge stems from allegations Kirtley stole Richardson's Jeep after he was killed.
If convicted, Kirtley could face up to life in prison on the murder charge. Prosecutors are also seeking an enhancement that could add up to 15 years to the potential sentence for use of a deadly weapon in commission of a felony.
Authorities say Kirtley left a Nampa bar after midnight on the day of the murder with Richardson. A surveillance video showed Kirtley taking Richardson's car keys and driving him away from the bar in his Jeep.
A witness told investigators a woman matching Kirtley's description was seen later that morning driving away from Richardson's home driving Richardson's red-and-black Jeep Wrangler.
The vehicle was later found partially submerged in the Snake River. A rock held the gas pedal down.
An affidavit filed in Third District Canyon County Court claims Kirtley admitted, during a conversation with another jail inmate, that she killed Richardson. She told the inmate she didn't feel bad about killing Richardson, saying she "wasn't going to be raped again," according to the affidavit.