Elisabeth “Betty” Broderick, who in 1989 infamously murdered her ex-husband and his new bride as they slept in the bedroom of their California home, has died at 78 while serving a life sentence. Broderick died on Friday at the California Institution for Women of natural causes, the California Department of Corrections and Rehabilitation confirmed to People . Then 44-year-old Betty Broderick smiles as the verdict is read in court as her attorney hangs his head. J T Macmillan/San Diego Union-Tribune via ZUMA / Shutterstock She was moved from the state prison three weeks ago to seek a higher level of care but details of her health condition were unclear, the outlet reported, citing the CDCR. Her death comes nearly 37 years after she shot and killed her ex-husband Dan, 44, and his new wife Linda Kolkena, 28, while they slept in bed in their Balboa Park home, according to the LA Times . She and her hubby, a medical malpractice attorney, married in 1969 and shared four children before divorcing on Jan.…