Here's what I could find quickly online:
An article titled "Search Through Me, O God" appeared in the October 1, 1993 Watchtower. Speaking about "apostates" on page 19, beginning with paragraph 15, we read:
Regarding them, the psalmist said: "Do I not hate those who are intensely hating you, O Jehovah, and do I not feel a loathing for those revolting against you? With a complete hatred I do hate them. They have become tome real enemies." (Psalm 139:21, 22) It was because they intensely hated Jehovah that David looked on them with abhorrence. Apostates are included among those who show their hatred of Jehovah by revolting against him. Apostasy is, in reality, a rebellion against Jehovah. Some apostates profess to know and serve God, but they reject teachings or requirements set out in his Word. Others claim to believe the Bible, but they reject Jehovah's organization and actively try to hinder its work. When they deliberately choose such badness after knowing what is right, when the bad becomes so ingrained that it is an inseparable part of their makeup, then a Christian must hate (in the Biblical sense of the word) those who have inseparably attached themselves to the badness. True Christians share Jehovah's feelings toward such apostates; they are not curious about apostate ideas. On the contrary, they "feel a loathing" toward those who have made themselves God's enemies, but they leave it to Jehovah to execute vengeance.--Job 13:16; Romans
12:19; 2 John 9, 10.
An article in The Watchtower, September 15, 1981, on page 29 under the
heading "DISFELLOWSHIPPED RELATIVES NOT LIVING AT HOME" has this to say:
The second situation that we need to consider is that involving a disfellowshipped or disassociated relative who is not in the immediate family circle or living at one's home. Such a person is still related by blood or marriage, and so there may be some limited need to care for necessary family matters. Nonetheless, it is not as if he were living in the same home where contact and conversation could not be avoided. We should keep clearly in mind the Bible's inspired direction: "Quit mixing in company with anyone called a brother that is a fornicator or a greedy person . . . not even eating with such a man."--1 Corinthians.
5:11.
See also the reference to this article on page 20 of The Watchtower November 15, 1988.