How do you get through to someone who thinks its fine to take coke and that it is dangerous? By the way my other half is a beautifull woman not some crack head just incase i have been painting the wrong picture 
That doesn't surprise me at all... Unfortunately it's the "in" thing, apparently... I'm glad I'm not into the latest fashions!!
Seriously... Hard and uncaring as it sounds, she will get worse and she wont stay beautiful for long. The addiction will get to her and she'll be taking it once a week, then a couple of times... Before long it'll be several times a day and she'll be stealing anything she can to pay for the habit.
Sorry if I'm blunt, but I see no point in mincing my words!

Perhaps you should let her read this thread and see what other people think, as long as you accept that she'll hit the roof when she finds out you've discussed it with us. Then you can show her that you aren't the strange one with your opinions, she is! :-? :-?