I didn't read the link, but a about 6 weeks ago I watching History or Discover and they showed that same scene.
They also found a hand. I dentified as a womans, about her age.
They figure she might have made it to the island, and survived a couple weeks waiting resque that never came.
I found alot of it to by hypathitecal. With what was found, they were guessing, giving scenarios.
Part of her arm and hand could have washed ashore with the piece of the plane during a Typhone from who knows where.