"2. Based on girl's purchases, company sends flyers - not private mail - addressed to girl by name, advertising specific types of products directly to her."
That her father didn't immediately put 2 and 2 together is besides the point. I think in his position, I might well have figured it out.
Perhaps its a function of age (I'm 37), but I am genuinely surprised at someone not finding this a clear violation of privacy.
[EDIT: Afterthought - it might be quite interesting to plot HN's attitude towards this against age. Would the younger people be less uncomfortable with it because this is the world they've grown up in?]