If you are invested in your relationship with your T, then I think you should also consider how you (5 years after an incident in her personal life that had nothing to do with you) could potentially cause her pain or even shame. I plead guilty to a significant crime 10 years ago. It was reduced to a misdemeanor. Yet, 10 years later I still feel bad about it. If anyone in my life brought it up, it would cause a lot of pain and shame even now. Actually, my spouse, who I started dating 3 years after the incident, googled me and then confronted me with it. I was initially pained and shamed when she brought it up. A stronger part took over and told her it was none of her business and that we owed her no explanation, as we had already paid our dues to society. If we ever found anything out about our T, especially something that happened 5 years ago, we'd never confront her. We simply would not want to hurt her.