I’ve just reread this entire thread, I remember some of the “complaints” about your DiL. I know this is a very difficult decision for you, but instead of potentially turning the whole world upside down AFTER your death, for your son and grandson, why not be open and honest and attempt to resolve your issues whilst you’re still alive with your DiL.
The smallest little unintended slights from our children’s partners can seem monumental to us, but often are without intention, malice and certainly not toxic in reality.
Mend the relationship now, and leave 25% of your estate to be split via any grandchildren and the remainder to your son, whom I assume loves you, his wife and his son. I can only feel such sorrow for him caught between his mother and his wife. If I was said wife, I would expect my husband to be on my side! It’s a truly awful situation, if you love your son please do your best to “fix this”
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