I would like to see the official photo from that meeting. I’m wondering if she tucked her legs under to get out of the way of the “official” photo.
Here is an article with the AP photograph from the event. Looks to be taken about the same time she was on the couch. But she is just out of the frame of the image.
I’m sure with the crowd of visitors, and the press on the other side of the room, it was something like “Excuse me, Ms. Conway - can you move your legs out of the photo?”
I saw another pic and she was on the sofa getting into position to photograph the group. That explains it.