The vehicle was found on March 26 and investigators have said they believe the crash was intentional. The Oregonian reported that the school district in Minnesota said Sarah and Jennifer Hart pulled their children out of school after the incident and began home-schooling them. That number is higher than the legal limit in the state, which is less than.08. Carpenter says toxicology tests also found that her wife Sarah Hart and two of their adopted children had "a significant amount" of an ingredient commonly found in the allergy drug Benadryl, which can make people sleepy.
"The theory is that the child was from this vehicle", Allman said.
Results for a third child were not yet released, Carpenter said, adding that none of the car's occupants were wearing seatbelts.
This March 20, 2016, file photo shows Hart family of Woodland, Wash., at a Bernie Sanders rally in Vancouver, Wash.
The vehicle appears to have left a highway for a dirt turnout, then accelerated on that turnout for about 70 feet until it went off the cliff, authorities said, citing data from the vehicle's software and air bag module. But investigators are still trying to determine why they stopped in Naselle, which added an hour and a half to their trip, and whether they contacted anyone.
Jennifer and Sarah Hart were found along with children Markis, 19, Jeremiah, 14, and Abigail, 14.
But their three other children - Devonte, 15, Hannah, 16, and Sierra, 12 - are missing, officials said.
Devonte drew national attention after he was photographed in tears while hugging a white police officer during a 2014 protest.
The Harts moved to a home in Woodland, Washington, in mid-2017, neighbors said.
The few details that have emerged paint what appear to be dark months, and perhaps years, for Jennifer and Sarah Hart's six adopted children, who repeatedly accused their mothers of abuse, according to reports from neighbors and a social worker.
And authorities have said social services officials in OR contacted the West Linn Police Department about the family in 2013 while they were living in the area.
Initially, Allman said the body was that of a child but the sheriff's office later corrected that it was a woman's.
Cheryl Hart, who identified herself as a friend of Sarah Hart, called 911 in Clark County on Monday, March 26, anxious because she hadn't been able to reach Sarah since receiving a text message from her at 3 a.m. two days earlier.