I guess it depends on what your true intentions for going to the conference are. If your reason for going is because you plan to actively engage in doing something for or genuinely care about the maltreatment of children, great. Bonus that you could see your t speak. I'd definitely consult with your t on it ahead of time. If your reason for going is only to see your t speak, then I don't think it wise or healthy for your sake. I think that might cross over into the stalking category.