I am so sorry you are going through this. I think it would take alot of guts to share such a difficult personal experience. I had to do a talk on trust once and I used my own personal experience about growing up in an alcoholic home. It was painful scary and at the same time very healing and in no way was I playing the victim. You sharing your story will touch one and probably more people in your audience in a way that may open a door to their own journey of healing . You may never know how your words may help someone, but sharing experiences such as that is not playing a victim. You can do the speech. Please let us know how it goes.