A former stripper at an embattled Dallas all-nude club admitted in federal court on Tuesday that she and others plotted a year ago to steal $3,000 from a woman by shooting her up with heroin to “incapacitate” her.

The woman died hours later.

Cierra Allyn Rounds, 27, of Dallas, pleaded guilty to conspiracy to distribute drugs. She faces up to 20 years in prison.

The victim, Rian Lashley, died March 25, 2014. She was 19.

In a chilling admission contained in court documents, Rounds acknowledged sending a series of text messages about the plan to a heroin supplier named “Jaymo” or “J.C.” from a Plano restaurant. Rounds and the victim had gone there eat breakfast and to meet J.C. to buy “China white” heroin.

Rounds said that during the meal she realized Lashley had $3,000 cash with her, and started exchanging text messages with the dealer about stealing it.

“I figured ud (sic) want me on this money,” Rounds texted J.C.

From the restaurant, the women drove to a house in Dallas. Rounds admitted that once inside, she and a woman named Kathryn Grace Dirks used a syringe to inject heroin into Lashley.

“Ima bout (sic) to shoot her up for her first time,” Rounds texted.

Later that afternoon, Lashley showed signs of distress and Rounds and Dirks placed Lashley in a bathtub of ice water to try to help her, Rounds said.

Lashley was then placed on a couch and appeared to go to sleep, but she died later that day, the court records said. An autopsy found Lashley died of a heroin overdose.

J.C., who has not been charged in the case, sold drugs in the all-nude Dallas strip club Jaguars Gold Club/Eternal Eden, the documents said. Glen William Brunton, 28, and Dirks, 25, are also charged in the case. Brunton’s trial is set for April 6. Dirks is on the run.

The city of Dallas is trying to shut down Jaguars for alleged rampant drug sales. Eternal Eden was an underage, after-hours dance club once located inside Jaguars. An attorney for the club has previously said in court filings that the venue does not "knowingly tolerate habitual criminal activity on the property," according to the Dallas Morning News.