I am planning on doing the same. I am working out what and how I will say it. I have concluded that there is nothing I can do to prevent her feeling hurt and anxious but I can't go on with her not asking the question and me not offering the answer.
I certainly don't want to force her and my family into a position that makes the whole social fabric of our lives crumble overnight but the facade has to come down at some point and it is better that I have some control over that rather than have that whipped out of my hands through other events.