A Las Vegas woman accused of killing her 68-year-old former roommate with fentanyl allegedly “force fed” the synthetic opioid to her before stuffing the slain sexagenarian’s body into a freezer, according to prosecutors.

Daniel Roush, aka Jazzlynn — who identifies as a “trans female just trying to find [her] place in this world” on Facebook — is accused of killing Monique Gilbertson in an effort to “take over her life,” according to Clark County Deputy District Attorney James Puccinelli, who spoke to local NBC affiliate KLAS on Friday about the allegations against Roush.

The 37-year-old is facing second-degree murder and other charges related to Gilbertson’s death back in November 2024.

“Daniel Roush gave Monique Gilbertson massive amounts of fentanyl in an effort to cause her to be deceased so he could go into her house and take over her life, essentially,” Puccinelli told KLAS.

On Nov. 6, authorities got a call from the manager at the property where Gilbertson’s mobile home was located to perform a welfare check on Gilbertson after attempts to contact her were unsuccessful. She had been living with Roush — who was identified by cops and prosecutors as a man named Daniel, despite her legally changing her name to Jazzlynn in Nevada’s Eighth Judicial District in 2022 — after meeting her at a Home Depot and hiring her to do handy work, according to her arrest report.

“There was text message correspondence indicating that Monique had let Mr. Roush live with her for a while to help him get him on his feet as he was transient,” Puccinelli explained. “However, [Gilbertson] kicked him out of the residence and he was not supposed to be there.”

Police on Nov 6. went to the 5500 block of Tres Piedras Road where Gilbertson lived, about eight miles east of the Las Vegas strip, and tried knocking on the door to see if she would answer, to no avail.

“Officers entered the home and located two individuals inside who could not provide officers with the location of the elderly female,” Las Vegas Metro Police Department officials said in a press release. “While officers searched the home they located a deceased female in a freezer. Both individuals were detained as investigators determined their involvement.”

For around two weeks, Roush allegedly went about her day with Gilbertson’s body stowed away in the freezer.

It wasn’t until an office manager at the property began noticing things, such as Gilbertson’s car being parked differently and her dogs barking louder than normal, and called the cops that police say Roush’s chilling secret was exposed.

According to Puccinelli, Gilbertson — who was identified on Facebook by local news outlets — was “folded up” inside the freezer and appeared to have been “frozen for some time” when authorities discovered her body. Roush claimed in police interviews that she found Gilbertson dead roughly a week before Halloween after the “elderly” woman took some drugs.

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Allegedly scared about the consequences, Roush allegedly told police: “I put her in the icebox, because I didn’t know what to do. Until I could figure it out, I had her in the icebox.”

Prosecutors say Roush “force fed” Gilbertson with at least 400 nanograms of fentanyl — “willfully, unlawfully, feloniously, and with malice” causing her death, according to her criminal complaint, which was obtained by Law&Crime in November.

Roush’s wife allegedly contacted police and told them she saw Roush give Gilbertson what she believed was fentanyl-laced cocaine. Puccinelli said Friday that a powder found at the home tested positive for fentanyl and lidocaine. Gilbertson reportedly had 400 nanograms of fentanyl per millimeter in her system at the time of her death, according to Puccinelli.

That’s 200 times the amount that could kill a person, KLAS reports.