At 19, I was a Second-Lieutenant in the Royal Army Service Corps. What were you? And what is the point of your question?

At 19 she was three years over the notional legal age of consent. Fail entirely to see where you are coming from.

I read the link you gave, but could find nothing relevant in it whatever. Perhaps you might copy/paste such passage[s] as you consider germane or applicable.

Your final sentence one of best examples of "begging the question" [petitio principii] I have come across recently. Keep up such logic in dispute and you will soon tie yourself in the most elegant of sheepshanks.