A lot of good advice....keep talking to her answer all her questions as honestly as you can, if you can't answer a certain question then say so do not lie to her because in time she will find out if you have Listen to her worries and concerns but also ask her to listen to what you have you have to say, about how the cding makes you feel, how it is a part of you and whilst it can lay dormant, chances are it will never go away completely.
One other thing I will say is that an SO's acceptance/support can take time and by that I mean years, the more you push the longer she will take, that of course is if she can accept/support.
try and get her to join here and then join us in the FAB forum, she will find wives/partners who are at different level's with their SO's and she'll get a lot of help and advice.