That looks like something that happened to my "Admiral" when she was 23. Captain in bow rider was drinking, overloaded boat and hit a ATON post head on at 30+ mph. Killed one person in the bow, threw Michelle into the post and then into the water.
Everyone thought both were dead. An alert angler pulled her out of the water and resuscitated her and they flew her to the hospital with lots of head trauma. She was in the hospital and recovery for over a year, and had to learn to walk again.
Had someone been around to help Bonnie Kalanick, perhaps she would have made it too?