A female Queens resident who tried to play plastic surgeon and give a woman butt implants in her basement pleaded guilty Friday to killing her client during the botched procedure.

Donna Francis, 39, of Far Rockaway, who is not in the medical profession, pleaded guilty to criminally negligent homicide in the 2015 death of Kelly Mayhew of Maryland.

Francis was attempting to give the bargain-basement butt injections to Mayhew, 34, using her massage table and silicone gel that she purchased from eBay. Mayhew had paid $1,600 for the procedure, according to a news release from the Queens District Attorney’s Office.

While Francis was pumping clear liquid into Mayhew’s backside, the victim started showing signs of distress, authorities said. Francis panicked and fled, leaving Mayhew alone with her frantic mother, who called 911.

First responders found Mayhew lying face up at the bottom of the stairs of Francis’ makeshift clinic, prosecutors say. The Office of the Chief Medical Examiner later ruled that Mayhew died of “systemic silicone emboli” — which occurs when a silicone injection into the human body is not properly encapsulated and enters the bloodstream, causing an embolism.

The day after the botched operation, Francis hopped on a plane to London to try to evade justice. She remained abroad for four years, only being hauled back to the US to face justice in August after a lengthy extradition process.

“In pleading guilty, the defendant has now admitted to causing the death of a young woman who sought a cosmetic procedure at a discount and paid with her life,” Acting DA James Ryan said in the release.

Francis will appear for sentencing Nov. 14 and faces up to a year in jail as part of her extradition deal.