Cheryl Walker, associate professor of obstetrics and gynecology, was cleared of conspiracy, elder abuse and embezzlement charges on Tuesday by the Santa Clara County prosecutor as her mother pleaded no contest to elder abuse and embezzlement.

Walker was suspected of giving painkillers to Mary Lee Koleber, her 95-year-old grandmother, ultimately causing her death in 2001. She was also accused of embezzling her $500,000 estate.

According to the San Francisco Chronicle, Walker’s brother conceded when testifying in court that he had forged Koleber’s signature on documents, which resulted in a significant turn in the case against her.

Meanwhile, Koleber’s daughter Janice Walker entered a no-contest plea on Tuesday. The Chronicle reported that Janice Walker’s deal with prosecutors will likely result in a two-year jail sentence in state prison.