Ian - Maybe they have. Are you able to suggest it in any way? If I recall they are shunning you - but my memory fails this early in the morning.
The younger daughter has returned home - but still has her JW head on! She believes anything not written by the society is Satanic and, therefore, steadfastly refuses to read it! My wife has offered her COC to read but she has refused. We leave the book where it can be seen. Happily, my daughter goes shopping with her mum, goes to work with her and they also go out to the theatre together. The lines of communication are kept open so we hope, gradually, she'll come to realise that we aren't the wicked people Watchtower would have her believe. We don't force anything!
Obviously, we brought our daughters up in the lie and they've not known anything else, so it's hard for them. My older daughter is married to an MS and they live far away, so I don't know what she's up to. We haven't had contact for around three years. What disgusts me is that my older daughter knows I have a serious disease and yet in spite of Christ's message being one of love and forgiveness my wife and I are treated as though we don't exist. How can a child ignore a parent with a serious illness? Just shows what a heinous, mind-controlling cult Watchtower is. Nothing Christian about it at all!
Ian