California Highway Patrol Officer Jay Slates testified that GPS data taken from the family’s car showed they stopped at a Walmart, where Jennifer purchased generic Benadryl in both liquid and pill forms. Sarah, who was in the passenger seat at the time of the crash, had at least 42 doses of the medication in her system, according to the toxicology report. The children meanwhile had anywhere from nine to 19 does of the medication in their bodies when they died.