Perhaps while it seems he is being dismissive of you, he doesn't want to face how much he misses her. Anyway, I'm glad you are doing what you can to deal with your trauma--I'm glad that you sought and are receiving professional help and that you encourage others to do so.

Perhaps there is one other avenue that you could pursue for closure. It's risky of me to suggest this because it might go against your belief system and there are a lot of fakes out there, but a legitimate psychic medium could help. They do exist and they can speak to the souls of the dearly departed and if she is alive, they might receive that message from another soul looking out for you.