Multiple media outlets have obtained copies of her death certificate where no cause is listed.
All five were convicted and sentenced to life in prison.
Manson died behind bars in 2017.
Linda Kasabian.Michael Ochs Archives/Getty Images.
In a 2016 profile, Rolling Stone wrote that Kasabian lived in a trailer park in near poverty.
In 2009, Kasabian was interviewed by Larry King on CNN.
The Manson killings shook Los Angeles and defined a generation.
In the flick,Stranger Thingsstar Maya Hawke plays a spoof Kasabian-inspired character named Flower Child.
