I know how tempting it is to do eye for an eye but I personally believe that if you really want to leave these items for your grandchildren and include your daughter in your will then you should do so. Jesus tells us to turn the other cheek and to love those who hate us. Just make sure you're doing this out of love and not doing it as an attempt to buy their love. Your actions may not have any consequences in melting their hearts.
Unfortunately, the Watchtower teaches that JW's are suppose to hate with Godly hatred those who have become disfellowshipped and to treat them as spiritual enemies and to shun them. The hapless witness isn't aware of how unloving and unbiblical their actions are, they're just simply following the Watchtower so we should always forgive them for 'they know not what they do.' (Luke 23:34)