Bury it? Maybe! How about starting by letting it go. I can atest that it's not always easy. Those nights when I lay awake in bed, sometimes, the past creeps back in.
I'm not sure if there is alot of benefit to discussing it with W unless she wants to vent about it. You can practice active listening without getting sucked in.
I agree with Rayanne. Ya gotta let go and stop thinkin too much. This gets easier as things improve in your R. Force yourself for now.
You are absolutely right. W must learn to let go on her own. All you can do is set the loving example.