The Dallas County medical examiner determined that Wykesha Reid died because of pulmonary embolization of silicon. Her death was ruled a homicide.
In February, Reid's body was found inside an abandoned Deep Ellum eyelash extensions business.
Police believe the owners, Denise "WeWe" Ross and Jimmy "Alicia" Clark, were running an illegal clinic and that something went wrong after they injected Reid with silicon.
The pair were originally charged with practicing medicine without a license in a separate case.
On Wednesday, Clarke was arrested again for murder. Ross is now also charged with murder, but is not yet in custody.
Several people have since come forward reporting complications from their procedures.
According to court documents, another patient described lying on a table on her stomach with Clarke and Ross on each side and three to four syringes nearby.
"The syringes were filled with an unknown liquid," a court document says. "During the procedure, the victim felt 'intense pain and was told be quiet after screaming in agony…when it was over, the injection holes were closed with super glue and cotton balls. The woman was given two tubes of super glue to take home so that she could stop any of the liquid injected into her body from leaking out."
The patient in that case survived.