Krystal Kenney

An Idaho nurse sobbed while she pled guilty to tampering with evidence in the Kelsey Berreth case on Friday. Krystal Jean (Lee) Kenney, 32, entered her plea in a Teller County courtroom in Colorado.

As part of her plea deal, Kenney is expected to cooperate with prosecutors in their case against Patrick Frasee, Berreth’s fiancé and the father of her 1-year-old daughter, Kelsey.

Kenney was terminated from her job as a nurse at a hospital in Idaho before she entered her guilty plea.

A spokesperson at St. Luke’s Magic Valley Medical Center in Twin Falls, Idaho, confirmed to Radar Online that Kenney was no longer employed there.

“An individual by that name is no longer an employee of St. Luke’s,” the spokesperson told Radar on Thursday.

Berreth was last seen on surveillance video shopping at a Colorado supermarket with her 1-year-old daughter, Kaylee, on Thanksgiving Day. Her mother, Cheryl, reported her missing 10 days later.

Frazee was arrested and charged with 2 counts of murder and three counts of solicitation to commit murder. Berreth’s body has not been found.

Police charged Kenney with tampering with evidence after she disposed of Berreth’s cell phone.

On November 25, three days after Berreth went missing, her phone pinged off a tower 800 miles away near Gooding, Idaho. Kenney lives about 30 minutes from where Berreth’s cell phone last pinged.

That same day, two text messages were sent from the missing mom’s phone. One text message was sent to her employer – Doss aviation, where she was a flight instructor. The message said Berreth would not be in to work for a week. A second text message was sent to Frazee.

Investigators believe Kenney sent the text messages from Berreth’s phone before disposing of the phone in Idaho.

Kenney, a mother of two, reportedly became romantically involved with Frazee after meeting him at a rodeo. Police believe Kenney helped Frazee after he killed Berreth.

Berreth’s parents filed a wrongful death lawsuit against Frazee, seeking unspecified damages, according to MSN.com. A court granted them temporary custody of 1-year-old Kaylee.