Well, if she has faith in monogamy becasue she witnessed you struggle to keep a rocky relationship together then maybe she will eventually accept and even embrace poly when she finds you to be happy and content in your choices. She cannot say you do not work on your relationships. There is something to be said for the journey and how you handle yourself-perseverence, discovery, acceptance, openness and self-actualization are all things we experience in and out of relationships. Coming out about anything unorthodox isn't easy, but rest in the fact that you have the strength to do so. You are a Hell of a woman!