It sounds like they are going to wrench your wife away from you, and try to get the children to "come back". The good news is that you are the head of the household according to their own doctrine, and you have the right to insist that your children read Crisis of Conscience through before deciding whether or not to "come back". They might realize that they are "coming back" to a scam. That would be the wise thing to do, since you would only be insisting on giving them more sources of information. They would then make their own decisions based on what they learn about the inner workings of the organization.
Your wife also has to make her own decisions. Likely, the Tower has her so afraid of reading the book that she will not benefit from it. Without persecuting her or forcing her (remember, that's what the Tower predicts will happen), try to entice her to read some of this literature. At the very least, she should think of her own experiences within the Tower. Is there genuine love, or is it all fake? Do the rules make sense, or are there too many stupid ones that make no sense? Does the directive of no independent Bible research make sense in light of the Scriptural directive to make sure of your faith? Are they hounding her to do ever more in field circus? Questions like these would be even better than the book, since those would indicate that the cost is greater than the benefit of remaining a Witless.
