I had this experience with a family member, lets say you say something against the witnesses doctronic and they dont say anything back, you ask them why are you not replying and they say "well you dont believe in us anymore".
What should I say back, something that wont offend them but goes straight to the point, you see they dont want to use their brains, they just want to listen at their halls about the end and apostates and how special they are and how false the rest of the world is and how they are the only true religion that follow the commandment to preach. But it does not matter what I say, doesn't matter how big it is it seems to have the reverse effect, it was alot easier before but now a conversation comes which they dont like they shun my conversation, yet they show me love, they dont touch whats the big issue, the big problem which is communication, and they maybe expected me to wake up, go back to the hall like nothing ever happen, like preaching is only for people who like what they hear. Im babling on but you get the idea.