Discovery in the San Francisco Battery case revealed that shortly after Mom's attempt to have Dad committed in Bellevue she began saving research on famous woman poisoners like Madame de Montspan, never conclusively implicated in their crimes. She would also save research on the lethal dose of Seroquel.

San Francisco Battery Case Russell v. Walsh reveals Mom's research on Seroquel
San Francisco Battery Case Russell v. Walsh reveals Mom's research on Seroquel

Mom researched Madame de Montespan and other famous women poisoners in September 2017
Mom researched Madame de Montespan and other famous women poisoners in September 2017