Well, teach them and train them and you are protecting them.
I totally get where the father is at in his mental state. I would freak if my child had to undergo something like this. I train with Mrs. 45er and want her to have the ability to defend herself, but if were up to me I'd want to be the one to have to deal with a situation like that. The mental aftermath is an entirely different kind of thing you have to prepare for. I don't think 14-year-old has had enough time on this earth to be mentally ready for something like this. That said, I'd rather it end this way than any other. That's one quick thinking and smart kid. Kudos to good parenting.