Anne Heche
The Los Angeles medical examiner found that drugs in the actor's blood were inactive at the time of the crash that killed her.
“I’ve already thought about it,” the late actor had said in a newly released podcast interview.
The 53-year-old actor died after suffering burns and a brain injury when she crashed her car into a house in LA.
The pair dated from 1997 to 2000.
The actor is on life support while her family determines if she can be an organ donor.
The US star remains in a coma in critical condition due to the incident.
The 53-year-old was taken to hospital following the incident on Friday morning.