Autopsy reports show that Coppell Mayor Jayne Peters was several feet behind her daughter when she shot and killed the 19-year-old.
The Dallas Morning News reports that the women didn't have alcohol or drugs in their systems when they died.
Jayne Peters did have two patches of the powerful painkiller fentanyl on her back, but the medical examiner's office found no evidence of the painkiller in her system.
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