The woman's name was Jennifer Hart. She drove her car off a cliff in CA, along with her wife and 6 adopted children. The investigators were even able to tell the speed at which she was driving, based on the vehicle's system (possibly a newer car). I also read in another article, that I don't have the time to find so maybe u can, that the road didnt have the tire streaks that would indicate that she tried to stop, based on investigator's reports..
They did find other clues in her phone, like searches, and the toxicology report noted a sleeping aid in her system, her wife's, as well as the children's..