I could go through the same steps as her, survival training, outfitting a boat, all the experience leading up to this, and nobody would have anything to say about it.
I doubt it. I am certain that I have read many threads here lambasting adults who go to sea with what is alleged by the lambasters to be insufficient experience.
I don't think age is particularly useful as a metric here. I know several kids that age who are smarter and more levelheaded than most of the adults I interact with in a week. It just comes down to the individual, as it always does and as it always should.