If I knew there was going to be an assassination attempt, would i sit that close to the target ?
If you were in on it, sure. But if you didn’t know, sitting that close would also make sense. So since the G-men haven’t sat her down in front of a bright light and done their good cop/bad cop thing, we don’t know if she knew anything or not, and both possibilities make sense. But the second one makes more sense, except for her lack of fear reaction, which might be something peculiar, but not proof that she was an evil Deep Stater there to keep an eye on things.
Look at the actual distance between the podium the ramp & stage and a fairly good distance to the first level of the bleacher. This was foreshortened by zoom camera/video shots.
Does no one understand this? No one was seated right behind DJT.