Aww Marti, this is really heart-breaking... you poor thing, you just put a lump in my throat :(
I just found out recently that my cousin smokes at age 17; both her parents are smokers...
However on the flip-side, I was at the University campus in Guildford on Saturday, and there was an 'open' day, so was really busy with parents and teenagers everywhere!... we had to walk through the entire campus to get to the cathedral. It was a long walk, so I fancied doing some people watching. Of all the many (many) people, I did not notice one single smoker (and I was looking for them). I don't know if this is even relevant to this, but I just wanted to mention it, because I am hopeful that this [parents and children both being smokers] is happening less than it once used to (fingers crossed). OK, there was one smoker there, but it was not a student or parent, but my SIL :(