"Look Jenny, first of all I'm satisfied the old man on Friday acted quite proper in the total way he handled your injury. I am satisfied that he did not take any advantage of your innocence even though you went to him in a very, very short skirt, highly provocative underwear and had to end up naked in front of him. Yes, the fact he didn't try to fondle your lovely breasts when he had the chance shows he was not being diverted from doing the things that would help your actual problem. I do think you can trust him, as I said before, as though he was your grandfather."
Learn from your parents' mistakes - use birth control!