Hartsfield currently stands charged with murder for the death of her most recent husband, after officials determined he died of foul play.
On Jan. 7, Sarah Hartsfield made a 911 call regarding a medical emergency with her husband. Medics responded to the home in a gated community in Beach City and began administering aid. Joseph was transported to Houston Methodist in Baytown.
At about 6:30 p.m. that day, the sheriff's office received a call from the hospital about the patient's suspicious illness.
Officials told ABC13 that 46-year-old Joseph had diabetes. They said his insulin levels were extremely high four to six hours before Sarah called 911. They said that his glucose monitor had sounded an alarm for quite some time before action was taken.