Sweetie between 10 & 13? You were just a kid. Your brain wasn't fully developed. When a kid does something "bad" it's usually because they're missing something they really need or they have been hurt really badly. They aren't being protected or guided or listened to in some important way. Don't be so hard on yourself. I'm pretty certain your T won't judge you too harshly about something you did as a child. I'm pretty sure lots of people wouldn't.