On jw.org FAQ, " Do Jehovah’s Witnesses Shun Former Members of Their Religion?, Those who were baptized as Jehovah’s Witnesses but no longer preach to others, perhaps even drifting away from association with fellow believers, are not shunned..... What of a man who is disfellowshipped but whose wife and children are still Jehovah’s Witnesses? The religious ties he had with his family change, but blood ties remain. The marriage relationship and normal family affections and dealings continue."
The NOV 2014 WT STUDY EDITION - "We must be holy in our conduct" par 5 " Are you personally proving yourself holy with regard to not associating with family members or others who have been disfellowshipped?"