Risk - so how many teens sailing around the world DIE? As an absolute number and as a percentage. Ditto teen drivers. Gather that data, get back to me when you have it.
You are totally lacking common sense if you really think a young girl sailing solo around the the world is an acceptable risk. I think the death rate for U.S. teen-agers is something like 50 deaths/100,000. That is 50 family tragedies per 100,000 teenagers. Too many. Perhaps you’ve never been the parent of teen-agers. Perhaps you’ve never experienced the needless death of a child and so don’t take it as seriously as other do.