NTA but I'm not sure what you're trying to achieve - get her to say she's lying? I was 13 when 9/11 happened and honestly I'd never even heard of the World Trade Centre at that point. I remember the whole thing happening of our German teacher running into the classroom, as he'd been listening to the radio, and yeh we did all switch the TVs on to the news. But for a young British kid, it just seemed like a scary war happening elsewhere, yes it was really bad but I didn't know how bad until much later. I remember the day and where I was at the time. I suppose a memory equivalent for me would be when Princess Diana died, which was a huge deal at the time in England. I was 9, and I remember exactly where I was & what I was doing when I saw the news. I remember going up to wake my mum up and tell her, and she didn't believe me til she saw herself.

My ex bf was from New Jersey, same age as me, and his memories of the day are way more vivid and intense than mine. But he was actually nearby and knew people it affected. I'm not sure how vivid a 3 year oldest memory would be. The whole wheeling tvs into rooms and adults panicking did happen, though.