Sounds like she had just enough gear and common sense to give luck a chance to save her. Well done! Sadly things don't sound good for her companion. I'll never comprehend how anyone in a similar situation would neglect to wear a PFD.
Unfortunately not wearing a PFD is very common here despite it being law. Not a year goes by that there are number of deaths that may of been preventable had the person been wearing a PFD.
At least this woman had her wits about her and was able to make a fire and forage for some food. The fire probably saved her life after the swim in the ocean to land and safety.
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Earth and sky, woods and fields, lakes and rivers, the mountain and the sea, are excellent schoolmasters, and teach some of us more than we can ever learn from books.
John Lubbock