Hi, I'm sorry for your loss.
I think it is worse for JWs than just not being able to grieve properly. With my non JW dad dying, my mom just went into an alcoholic stupor for a few years. Everything she knew said that he died "knowing" the "truth" and rejected it. I also think a big part of the problem is that she doesn't truly "buy" it herself, but can't/wont articulate her issues out of loyalty to the organization
My mom and dad loved each other a lot. He put up with her being a JW and she put up with him rejecting it. I know she worries for him still cause her hope for the future conversations are always qualified by the fear of what will happen to him.I don't even know the official WT teaching on it, but I do know that death is something that weighs very heavy on my mom for every one of her family members, especially the her (JWish) brother.