DEAR ABBY: We helped our eldest son, who is 35 and an engineer, buy a house five miles from us. A woman his friend introduced him to moved in with him a few years later. Against our advice, he married her last year. Her personality has always been difficult, noncollaborative, selfish and demanding. They now have a baby because she convinced him that only she could raise a child for him. Now, she will no longer allow our son to talk to us, visit or let us see the baby, saying we give her anxiety.