About the OP, what I experienced with the JWs is that they use funerals and people's loss as a way to preach, proselytize and push their agenda. I attended quite a few JW funerals and all of them were about preaching to non-JW relatives about the "opportunity" of seeing their loved ones again and all that paradise nonsense.
I never experienced any JW trying to provide true comfort to the loved ones of the diseased person, not even acknowledging the pain and loss of them. It's all about them seizing the opportunity to talk about their resurrection, and their paradise, and living forever and you know the rest.