A woman has pleaded guilty to a charge that she tampered with evidence connected to the disappearance of Woodland Park mother Kelsey Berreth, and has agreed to testify against the man charged with killing her.

Krystal Jean Lee Kenney of Hansen, Idaho, entered the plea Friday.

“I learned that Patrick Frazee had committed a homicide on approximately Nov. 22 in Teller County,” she said in a statement read during court. “I knew that law enforcement would be investigating that crime. I moved the victim’s cellphone with the intent to impair the phone’s availability in the investigation.”

Prosecutors in December charged Berreth’s fiance, Patrick Frazee, with murder and solicitation of murder in the 29-year-old woman’s death. District Attorney Dan May said Friday that he could not comment on the search for Berreth’s body. 

Berreth was last seen on Thanksgiving. Police said her phone pinged three days later in Idaho, where two messages were sent to Frazee and her employer.

Kenney said in a court appearance Friday that she tampered with Berreth’s cell phone. She said it happened sometime between November 24 and 26. She is not in custody, and is facing up to three years behind bars.

Kenney is not allowed to talk to the press as part of her plea deal. May would not disclose what type of relationship she had with Frazee.

Kenney has agreed to testify against Frazee. She said in court Friday that she knew Frazee had committed homicide. 

Kenney will be sentenced after Frazee’s trial and after anyone else prosecuted.

Frazee will be back in court on February 19 for a preliminary hearing.

Kenney’s next court hearing is set for June 24.