Why are you sure she was? Because she was old for her grade? Again, that's absurd.One of us doesn't, that's for sure. The question was and is, "was this kid on the radar?". I'm sure she was and problems in school leading her to be held back at some point would be part of it. It's a piece of the puzzle which is why is said ONE of many.
Think of it like a poster who laugh reacts to every single post someone else makes. By itself it's not necessarily indicative of being a loser, but it's a piece of the puzzle... when combined with hundreds of stupid posts it helps completes the picture.
Your ignorance is exceeded by your lack of wit.