I think if you say something to them like "Now that you know the truth, you'll probably start thinking back on times when something didn't seem right. There's no need to tell me any of those things unless you want to; you know if you EVER have any questions, I will always tell you the truth. But I don't ever want you to feel like you have to report back to me about things that your mother does -- that's not why I'm telling you this," that that would be appropriate.
