Texas woman who killed her husband with insulin because he wanted to leave her is sentenced
Sarah Hartsfield was sentenced to life in prison for the murder of her husband, who days before feared for his life and expressed intentions to leave her
Sarah Hartsfield, a former US Army sergeant, was sentenced to life in prison after being found guilty of the murder of her husband, Joseph Hartsfield, who died in 2023 from complications resulting from an insulin overdose. The case has garnered national attention due to the woman's violent history, linked to multiple previous relationships marked by abuse, suspicious deaths, and unresolved accusations. The Chambers County jury deliberated less than two hours before convicting Hartsfield of first-degree murder. Assistant District Attorney Mallory Vargas said during her closing arguments that the defendant believed she would "get away with it," as she had in the past. "It's what he's always done," Vargas said. During the trial, Joseph's sister testified that he feared for his life and had expressed intentions to leave Sarah. "He told me he was worried she was going to kill him in his sleep," Jeannie Hartsfield testified. She added that she tried to convince him not to return to her days before his death. Defense attorney Case Darwin argued that the evidence was circumstantial and that Joseph may have died from poor management of his diabetic condition, exacerbated by medications that increased his insulin sensitivity. She also accused the prosecution of relying on "unsubstantiated innuendo" and testimony that did not conclusively prove her client's guilt.
Joseph Hartsfield, who had suffered from diabetes for more than 20 years, was hospitalized on January 7, 2023, with dangerously low blood glucose levels. Although he was temporarily stabilized, he died days later. The medical examiner concluded that he died from complications of an insulin overdose, although he did not determine whether it was an accident, suicide, or homicide. However, the jury found the evidence sufficient to confirm Sarah's guilt.
According to investigators, it took the woman hours to call 911. Authorities found insulin syringes next to the bed, although they were not identified as evidence at the time.Data from Hartsfield's phone contradicted her initial statements: while she claimed to be asleep under the influence of painkillers, records indicated she actively used her cell phone during that time. Additionally, shortly before her husband was hospitalized, several of Joseph's personal files, including banking information and digital credentials, were sent from her phone. A nurse testified that despite medical efforts to stabilize the patient, his blood sugar continued to drop, suggesting the presence of a substance that was counteracting the administered glucose. Violence and Suspicious Deaths in Past Relationships Joseph Hartsfield's death is just the latest in a disturbing history. In 2018, Sarah Hartsfield shot and killed her fiance, David Bragg, in Minnesota. The incident was considered self-defense at the time, but authorities reopened the case after she was charged with Joseph's murder.
In addition, other episodes link her to alleged abuse, threats, and an alleged criminal conspiracy. Christopher Donohue, her third husband, obtained a restraining order alleging that Sarah tried to convince her fourth husband, David George, to murder his new wife. An FBI agent testified at the recent trial about these accusations, as well as about an alleged arson attack on family property in Missouri in 2014.
Sarah Hartsfield has denied any involvement in these cases and has not faced formal charges in connection with them.
The mother of four children has been married five times. Her first marriage to Titus Knoernschild ended in 1996 after reports of threats. She was arrested later that year for allegedly assaulting her second husband, Michael Traxler, although the charges were later dropped.
Her third husband, Jon Donohue, ended their relationship in 2017, and in 2019 she married David George, from whom she separated in 2021. She eventually married Joseph Hartsfield in 2022.
Several ex-husbands have reported patterns of manipulation, emotional abuse, and death threats.

