Reading the linked forum at reply 150, it appears that she was getting all of her sailing directions from dad via long range comms. He was doing the weather work and giving her the next waypoint to put into the GPS/autopilot.
When the mast went down and comms were gone she was lost and didn’t have a plan. Her only “if anything goes wrong” plan was “turn on the EPIRB.”
That is why the ocean sailing community universally scorns this misbegotten effort.
If you try to be the youngest ever to scale Everest, and you do in in January because May will be too late, don’t expect praise when you activate your EPIRB at 24,000 feet in a blizzard, expecting a rescue effort to be mounted.
That’s what this family did, they sent Abbey up Everest in winter, because spring was too late for the “youngest ever” record.
Since I don’t sail, I didn’t understand everything the sailing forum was saying but I did get that once communication with home was gone, she was done. She didn’t know how to do anything without all the tech equipment. And she dangerously left the deck littered.