Diana - this is so interesting because I am a lucid dreamer and I started writing my dreams from the time of my separation and divorce. So many dreams with snakes!
I focus on the emotions that I feel in the dream. And I too found a shift in the way I feel when I am around my wasband in the dream. It went from pain, fear, discomfort, to a place where I was a bit more neutral. There are still times when I get that feeling of being dissed, and don't like it anymore. I am glad it's just a dream but years of feeling that way leaves a lasting scar for sure.