I have to say it, always. Lucid Dreaming. It can help with the grieving process. Allow you to speak with her again and find some sense of peace. While itll just be a dream representation of her, the unconscious mind can reconstruct anything and even give you experiences based on nothing more than expectation, even if you haven't experienced it. You could work through her death with "her". You can see her again. I do it with my friends.
It is a saddeningly ignored skill, though apparently 1 in 5 people have had them, even if they dont know what it was. Awareness that youre dreaming. Dreams are very powerful. An entire world where any wish you have can come true. Also scientifically proven, over and over. Various studies done show consciousness within a dream as a real, factual thing. It amazes me that this is not mainstream.
But. It can help. With so many things.