Butting in here, for fear of upsetting the 'regulars' on a similar thread, which I suspect the OP has been following and biding her/his time to pounce .
I don't do washing of dirty linen on a public forum, but being 'blanked' by a previously affectionate daughter or son is much more common than many might imagine.
I had bloody awful, interfering, controlling parents and I swore if I was fortunate enough to have children of my own I would not be like that... and I wasn't. Nevertheless, on meeting a complete idiot via internet dating a couple of years ago elder DD decided I had interfered in her life when I (mildly) criticised the way he and his spoilt brat of a child were treating her, and her savings!
So I inadvertently crossed the line and was told via email to f...off.
Later I was invited...formally by printed invitation,to their wedding but as the 5 minute registry farce would have involved booking flights, hotels and the purchase of a hat I declined.
Since than I only have news of her via her sister, who bless her heart, refuses to take sides.
But how big a deal is this sort of behaviour? Where is it written that families should stick to together like glue? My 'children' are in the thirties and forties... they don't need me hovering over them like a helicopter, and I am not so emotionally frail and and needy that I must be an integral part of their lives.
I intend to sit back and let whatever develops, develop. I have other daughters, she has only one mother. If she wants to renew our relationship that's up to her. I don't track her via mutual friends or facebook, I get on with my life.
Why keep picking at an open wound, unless it is to display it like stigmata? That is what I suspect some grandparents keep doing, and by the time one is a grandparent life is far too short.