Silicone injections for buttocks enhancement are illegal in the United States.
Windslowe, who lacked a medical license or training, allegedly made a profitable living illegally injecting women with silicone. Aderotimi died after flying to Philadelphia from London to get the injection at an airport hotel.
Windslowe was arrested in February 2012 after another woman complained of twice being hospitalized after attending a "pumping party" in East Germantown at which Windslowe allegedly injected her and others.
Jennifer Selber, chief of homicide in the District Attorney's Office, said that, because of the pending trial, she could not comment on Windslowe's letters or her offer to plead guilty. She said she also did not know whether Windslowe wrote to District Attorney Seth Williams, as she contended in her letters to the Daily News.
As for Windslowe's going public with her campaign to "let us amicably put this case to rest without any more negative press and media attention on our city," Selber said, "It's highly unusual. Her own lawyer says that."
That would be David S. Rudenstein, who just last month said Windslowe was going to trial.
The Daily News quoted Rudenstein as saying his client's letters to the newspaper were "grotesquely inappropriate." Reached Friday in the middle of another murder trial, Rudenstein seemed more resigned than angry.
"No defense lawyer wants to have a client making comments behind their back," Rudenstein said. "The lawyer should be making their arguments."
He reiterated that he believed Windslowe's case would be resolved at a trial, scheduled for February 2015, and not by a guilty plea.
"I think she's really just frustrated that it's taking this long to get there," he added. Frustrated or not, Windslowe may have opened herself up to more legal problems: Common Pleas Court Judge Rose Marie DeFino-Nastasi had imposed a gag order barring the lawyers, principals, and witnesses from commenting publicly about the case.