datto it depends on who you are. If your are newly associated with JWs I am sure they will explain it as a loving provision to get the wayward sheep back into the fold. They will read scriptures about not associating with disfelloshipped or unrepentant wrong doers "not even eating with such a person" to paraphrase.
I'll give an example ask them about a brother or sister that has a recurring addiction to cigarettes. They will explain that you are not supposed to associate or even talk to a sister or brother that has fallen of the wagon and gone back to cigarettes, family or not doesn't matter.
If you have been associated with witnesses for a longer period of time you should already know these things.